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mou-al202 technical manual revision: 1.0
contents contents ii 1 getting started 1 1.1 display options available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.4 connecting to a pc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.5 installing the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.5.1 drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.5.2 uproject . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 hardware information 4 2.1 alternate power connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 usb header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 alternate usb header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 general purpose outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 troubleshooting 9 3.1 the display does not turn on when power is applied. . . . . . . . . . . . . . . . . . . . . . . 9 3.2 the display module is not communicating. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 the display module is communicating, however text cannot be displayed. . . . . . . . . . . 10 4 text 10 4.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1.1 character set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1.2 control characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 auto scroll on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.3 auto scroll off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.4 clear screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.5 changing the startup screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.6 set auto line wrap on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.7 set auto line wrap off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.8 set cursor position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.9 go home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.10 move cursor back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.11 move cursor forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.12 underline cursor on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.13 underline cursor off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.14 blinking block cursor on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.15 blinking block cursor off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 matrix orbital mou-al202 ii
5 special characters 16 5.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2 creating a custom character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.3 saving custom characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.4 loading custom characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.5 save startup screen custom characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.6 initialize medium number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5.7 place medium numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5.8 initialize horizontal bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.9 place horizontal bar graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.10 initialize narrow vertical bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.11 initialize wide vertical bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.12 place vertical bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6 general purpose output 22 6.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.2 general purpose output off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.3 general purpose output on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.4 set startup gpo state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7 display functions 23 7.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.2 display on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.3 display off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.4 set brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.5 set and save brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.6 set contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.7 set and save contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 8 data security 26 8.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8.2 set remember . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8.3 data lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.4 set and save data lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.5 writes the customer data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.6 reads the customer data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9 miscellaneous 28 9.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9.2 read version number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9.3 read module type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 10 command summary 30 10.1 text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 10.2 special characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 10.3 general purpose output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 10.4 display functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 matrix orbital mou-al202 iii
10.5 data security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10.6 miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10.7 command by number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 11 appendix 35 11.1 speci?cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.1.1 environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.1.2 electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.2 optical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.3 physical layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.4 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11.5 contacting matrix orbital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 matrix orbital mou-al202 iv
1 getting started figure 1: mou-al202 the mou-al202 is an intelligent lcd display designed to decrease development time by providing an instant solution to any project. with the ability to communicate via usb protocol, the versatile mou-al202 can be easliy interfaced to any pc or usb host. the ease of use is further enhanced by an intuitive com- mand structure to allow display settings such as backlight brightness, and contrast to be software controlled. general purpose outputs allow the controller to switch up to three electronic or electro-mechanical devices by issuing commands to the display unit. these can be used for controlling leds, relays, etc.. additionally, up to thirty-two custom characters such as character sets for bar graphs, and medium numbers may be stored in the non-volatile memory to be easily recalled and displayed at any time. 1.1 display options available the mou-al202 comes in a wide variety of colors, to allow you to select the display which will best ?t your project needs. these options can be found on our e-commerce website at http://www.matrixorbital.com. to contact a sales associate for more information on any of these options, see section 11.5 for contact information. 1.2 accessories note matrix orbital provides all the interface accessories needed to get your display up and running. you will ?nd these accessories and others on our e-commerce website at http://www.matrixorbital.com. to contact a sales associate see section 11.5 on page 37 for contact information. matrix orbital mou-al202 1
figure 2: 3ft mini-b usb 1.3 features 2 20 column by 2 line alphanumeric liquid crystal display 2 usb communication protocol 2 three, 5v -20ma, general purpose outputs for a variety of applications 2 lightning fast communication, default 19.2 kbps serial communication speed 2 built in font with provision for up to 8 user de?ned characters 2 five custom character memory banks, which enable storage of up to forty custom characters 2 fully buffered so that no delays in transmission are ever necessary 2 ability to add a customized splash / startup screen 2 horizontal or vertical bar graphs 2 medium digit capability 2 software controlled contrast and brightness with con?gurable time-out setting up to 90 minutes 1.4 connecting to a pc the mou-al202 connects seamlessly to a pc and it is an excellent means of testing the functionality. to connect your display to a pc, you will require a usb cable such as the one pictured in ?gure 2. 1. in order to connect your usb display to a personal computer simply plug the mini-b usb cable from the pc to the usb connector on the display. matrix orbital mou-al202 2
note the mou-al202 unit can also be powered via a standard pc power cable, shown in ?gure 3. figure 3: alternate display power cable 1.5 installing the software 1.5.1 drivers in order to communicate with any matrix orbital usb display, the proper drivers for the unit must ?rst be correctly installed on the controlling pc or device. to preform this operation, follow the steps listed below: 1. go to the website location: http://www.matrixorbital.ca/drivers/ 2. download or copy the appropriate usb drivers into a directory. 3. uncompress the ?les. they will be a self extracting zip ?le. 4. connect the usb cable to the display and the computer. 5. windows will give a prompt for drivers for a usb , serial device. 6. select specify location, and navigate to the directory the ?le was uncompressed to. 7. test the display using a software tool such as uproject. 1.5.2 uproject uproject was designed by matrix orbital to provide a simple and easy to use interface that will allow you to test all of the features of our alpha numeric displays. to install uproject from the matrix orbital website, follow the following steps: matrix orbital mou-al202 3
1. go to the website location: http://www.matrixorbital.ca/software/software_alpha/uproject/ 2. click on "download here" 3. locate the ?le uproject.exe on your desktop 4. double click on "uproject.exe" be sure to check the information selected in the com setup the ?rst time uproject is run. although the display is connected via a usb cable, it will create its own, virtual, comport which will be displayed in the uproject environment. once this information is entered correctly the program can be used to control all functions of the graphic display. comport the serial port the display is plugged in to. baudrate the communication speed the display module is set to. (default 19,200) figure 4: uproject settings notes 2 uproject and other alphanumeric software may also be downloaded from matrix or- bitals support site at http://www.matrixorbital.ca/software/software_alpha/ 2 hardware information refer to the following diagram for this chapter: matrix orbital mou-al202 4
1 alternate power connector 3 alternate usb header (optional) 2 usb header 4 gpos figure 5: mou-al202 2.1 alternate power connector the mou-al202 provides a power connector to allow the device to be powered externally. this con- nector can be coupled to the standard 4-wire power connector available in most pc power supplies. in order to power the device externally, you must ?rst remove a single usb power select jumper. the jumper to remove is the usb jumper labeled p as seen in ?gure 7. matrix orbital mou-al202 5
pin 1 nc pin 2 gnd pin 3 gnd pin 4 +5v figure 6: alternate power connector figure 7: power select jumper 2.2 usb header the usb header provides usb connector for communication and power of the display. an alternate power option for the display can be seen in ?gure 6. matrix orbital mou-al202 6
figure 8: usb header table 1: power requirements standard supply voltage +5vdc 0.25v supply current 44ma (backlight off) backlight current 113ma (backlight on) warnings 2 do not apply any power with reversed polarization. 2 do not apply any voltage other than the speci?ed voltage. 2.3 alternate usb header the mou-al202 also offers an alternative, usb header option to permit usb communication with the device through a standard onboard header. please note the the display normally does not come with the matrix orbital mou-al202 7
alternate usb header, it will have to be ordered as a custom. please talk to your sales representative if you would like this option. figure 9: alternate usb header note this component is optional and must be custom ordered 2.4 general purpose outputs a unique feature of the mou-al202 is the ability to control relays and other external devices using a general purpose output, which can provide up to 20 ma of current and +5vdc from the positive side of the gpo. this is limited by a 240 ohm resistor which is located to the above right of the gpos as pictured below in ?gure 10. if the device, which is being driven by a gpo, requires a relatively high current (such as a relay) and has an internal resistance of its own greater than 250 ohms, then the 240 ohm resistor may be removed and replaced with a jumper. matrix orbital mou-al202 8
+ +5vdc at 20 ma - ground (0vdc) figure 10: general purpose output warning if connecting a relay, be sure that it is fully clamped using a diode and capacitor in order to absorb any electro-motive force (emf) which will be generated. 3 troubleshooting 3.1 the display does not turn on when power is applied. 2 first, check the usb cable which you are using for continuity. if you dont have an ohm meter, try using a different usb cable, if this does not help try using a different power supply. 2 second, ensure that the correct drivers are properly installed. for the latest drivers, visit the matrix orbital website at http://www.matrixorbital.ca/drivers/. if you require additional support to resolve this matter, please contact matrix orbital using one of the mehods described in section 11.5. 2 the last step will be to check the usb cable on the mou-al202. if the usb cable has become loose, or you are unable to resolve the issue, please contact matrix orbital, see section 11.5 for contact information. 3.2 the display module is not communicating. 2 ensure that the host system and display module are both communicating on the same baud rate. the default baud rate for the display module is 19200 bps. matrix orbital mou-al202 9
3.3 the display module is communicating, however text cannot be displayed. 2 a common cause may be that the brightness or contrast settings have been set to low. the solution to this problem is to change the settings. a good tool to do this with is uproject. see 1.5.2 for more information. 4 text 4.1 introduction the mou-al202 is an intelligent display module, designed to reduce the amount of code necessary to begin displaying data. this means that it is able to display all characters and strings that are sent to it, which are de?ned in the current character set. the display module will begin displaying text at the top left corner of the display area, known as home, and continue to print to the display as if it was a page on a typewriter. when the text reaches the bottom right row, it is able to automatically scroll all of the lines up and continue to display text, with the auto scroll option set to on. matrix orbital mou-al202 10
4.1.1 character set figure 11: character set 4.1.2 control characters in addition to a full text set, the mou-al202 display supports the following ascii control characters: 0x08 backspace 0x0c clear screen / new page 0x0d carriage return 0x0a line feed / new line 4.2 auto scroll on matrix orbital mou-al202 11
syntax hexadecimal 0xfe 0x51 decimal 254 81 ascii 254 q description when auto scrolling is on, it causes the display to shift the entire displays contents up to make room for a new line of text when the text reaches the end of the last row. remembered yes default on 4.3 auto scroll off syntax hexadecimal 0xfe 0x52 decimal 254 82 ascii 254 r description when auto scrolling is disabled the text will wrap to the top left corner of the display area when the text reaches the end of last row. remembered yes 4.4 clear screen syntax hexadecimal 0xfe 0x58 decimal 254 88 ascii 254 x description this command will immediately clear all of the contents of the display. remembered no 4.5 changing the startup screen syntax hexadecimal 0xfe 0x40 decimal 254 64 ascii 254 @ description in order to change the text that is displayed by the mou-al202 when it starts up simply send the command bytes 254 64 followed by the characters that you wish to display, starting from the top left. this command will automatically line wrap the characters that are sent to it. remembered yes matrix orbital mou-al202 12
4.6 set auto line wrap on syntax hexadecimal 0xfe 0x43 decimal 254 67 ascii 254 c description enabling auto line wrap will allow the cursor to automatically wrap over to the next line when the current line is full. note line wraps may occur in the middle of a word. remembered yes 4.7 set auto line wrap off syntax hexadecimal 0xfe 0x44 decimal 254 68 ascii 254 d description disabling auto line wrap will allow you to have full control over the cursor position. this means that once the cursor has advanced to the end of a line, it will not wrap over to the next line, unless given the set cursor position command. note all characters written to the display past the end of a line will be lost. remembered yes 4.8 set cursor position syntax hexadecimal 0xfe 0x47 [col] [row] decimal 254 71 [col] [row] ascii 254 g [col] [row] parameters parameter length description col 1 column row 1 row matrix orbital mou-al202 13
description this command will allow you to manually set the cursor position, which controls the text insertion point, by specifying the [col] and [row] of the new proposed cursor position. note if the cursor position is set past the end of a line it will wrap to the beginning of the next line. remembered no 4.9 go home syntax hexadecimal 0xfe 0x48 decimal 254 72 ascii 254 h description this command will return the cursor to the top left corner of the display area, identi?ed as row one, column one. remembered no 4.10 move cursor back syntax hexadecimal 0xfe 0x4c decimal 254 76 ascii 254 l description this command will move the cursor back one space. if this command is sent when the cursor is at the home position the cursor will wrap to the last row / column position if line wrap is on. sending this command will not effect the text displayed on the module, however any characters that are sent will over write the current characters that are being displayed. remembered no 4.11 move cursor forward syntax hexadecimal 0xfe 0x4d decimal 254 77 ascii 254 m matrix orbital mou-al202 14
description this command will move the cursor forward one space. if this command is sent when the cursor is at the bottom right position the cursor will wrap back to the home position if line wrap is on. sending this command will not effect the text displayed on the module, however any characters that are sent will over write the current characters that are being displayed. remembered no 4.12 underline cursor on syntax hexadecimal 0xfe 0x4a decimal 254 74 ascii 254 j description this command will cause the mou-al202 to display an underline cursor at the current text insertion point. remembered yes 4.13 underline cursor off syntax hexadecimal 0xfe 0x4b decimal 254 75 ascii 254 k description this command will turn the the underline cursor off. remembered yes 4.14 blinking block cursor on syntax hexadecimal 0xfe 0x53 decimal 254 83 ascii 254 s description this command will cause the mou-al202 to display a block cursor at the current text insertion point. remembered yes 4.15 blinking block cursor off matrix orbital mou-al202 15
syntax hexadecimal 0xfe 0x54 decimal 254 84 ascii 254 t description this command will turn the block cursor off. remembered yes 5 special characters 5.1 introduction the mou-al202 has the ability to create four different sets of eight custom characters and save them to internal banks of memory. each set of eight can be recalled from memory at any time, and selected characters can be written to the display screen. characters and sets can be created at any time, saved for later use, and displayed to the screen through the intuitive command structure described below. 5.2 creating a custom character syntax hexadecimal 0xfe 0x4e [refid] [data] decimal 254 78 [refid] [data] ascii 254 n [refid] [data] parameters parameter length description refid 1 character reference id (0-7). data 8 character data. matrix orbital mou-al202 16
description the mou-al202 allows for upta to eight custom de?ned characters to be added onto the the character set. a custom character is a ?ve by eight pixel matrix with each row represented by a byte value. for example: custom character h decimal hex 1 0 0 0 0 16 0x10 1 0 0 0 0 16 0x10 1 0 0 0 0 16 0x10 1 0 0 0 0 16 0x10 1 0 1 1 0 22 0x16 1 1 0 0 1 25 0x19 1 0 0 0 1 17 0x11 1 0 0 0 1 17 0x11 each bit value of one, in the table, represents an on pixel, whereas a value of zero represents a pixel that is turned off. therefore in order to de?ne custom character h you would send the command byte pre?x 254 fol- lowed by the command 78. next, you will have to select the memory location in which you wish to save the character in. the available mem- ory locations for this command are zero through to seven. after sending the memory location, or [refid], you may then send the eight byte custom character data in sequence from the top to the bottom. once you have de?ned a custom character you may display it by sending the display module the [refid]. for example if a custom character was saved in position one, the command to display the custom character, at the current cursor position, would be simply to send the number one to the display module without quotes. remembered no 5.3 saving custom characters syntax hexadecimal 0xfe 0xc1 [bank] [id] [data] decimal 254 193 [bank] [id] [data] parameters parameter length description bank 1 memory bank to save to (0-4). id 1 character id (0-7) data 8 character de?nition matrix orbital mou-al202 17
description new to the mou-al202 has added ?ve non-volatile memory banks for custom character storage. this is intended to allow you to create your own custom bar graphs, medium/large numbers and startup screen. however, each memory bank may be used to store a set of any eight custom characters; with the only provision being that memory bank zero contains the characters that will be used in the startup screen. by default the memory banks will be loaded as follows: [bank] description 0 startup screen characters. 1 horizontal bars 2 vertical bars 3 medium numbers in order to save new custom characters into a memory bank, follow the same process as you would for creating a custom character, see sec- tion 5.2 on page 16, only use 254 193 [bank number] before sending the [id] and character [data]. remembered yes 5.4 loading custom characters syntax hexadecimal 0xfe 0xc0 [bank] decimal 254 192 [bank] parameters parameter length description bank 1 memory bank to save to (0-4). description this command is used to load the custom characters into the volatile memory so that they may be used. if custom bar graph or number characters are stored in the memory banks, this command may be used instead of initializing the bar graph / number. to use this command send the command bytes followed by the [bank] that contains the custom character data that you want to retrieve. remembered no 5.5 save startup screen custom characters syntax hexadecimal 0xfe 0xc2 [refid] [data] decimal 254 194 [refid] [data] parameters parameter length description refid 1 character reference id (0-7). data 8 character data. matrix orbital mou-al202 18
description using this command you may create the custom characters. that will be stored in memory bank zero, which will be used in the startup screen. for more information about creating custom characters see section 5.2 on page 16 . notes 2 changes only take place once the power has been cycled. 2 this command is the same as sending cmd 254 / 193 / 0 / [id] / [data] remembered yes 5.6 initialize medium number syntax hexadecimal 0xfe 0x6d decimal 254 109 ascii 254 m description this command will load the default medium number characters into the volatile memory. if you have stored your own custom medium numbers, use the load custom characters command to load your custom character data into the volatile memory. this command will allow you to use the place medium numbers command. remembered no 5.7 place medium numbers syntax hexadecimal 0xfe 0x6f [row] [col] [digit] decimal 254 111 [row] [col] [digit] ascii 254 o [row] [col] [digit] parameters parameter length description row 1 the row number. col 1 the column number. digit 1 medium number to place (0-9). description this command will place a medium number (two columns high) at the [row] and [col] speci?ed. note medium numbers must be initialized before this command is executed. remembered no matrix orbital mou-al202 19
5.8 initialize horizontal bar syntax hexadecimal 0xfe 0x68 decimal 254 104 ascii 254 h description this command will load the default horizontal bar characters into the volatile memory. if you have stored your own custom horizontal bar data, use the load custom characters command instead to load your custom bar data into the volatile memory. this command will allow you to use the place horizontal bar command. remembered no 5.9 place horizontal bar graph syntax hexadecimal 0xfe 0x7c [col] [row] [dir] [length] decimal 254 124 [col] [row] [dir] [length] ascii 254 | [col] [row] [dir] [length] parameters parameter length description col 1 the column number. row 1 the row number. dir 1 the direction of the bar data (0 or 1). length 1 the length of the bar data. description this command will place a bar graph at [row], [column]. a [dir] value of zero will cause the bar to go right, and one will cause the bar to go left. the [length] is the size in pixels of the bar graph. notes 2 horizontal bars must be initialized before this command is executed. 2 bar graphs may be one directional only. remembered no 5.10 initialize narrow vertical bar syntax hexadecimal 0xfe 0x73 decimal 254 115 ascii 254 s matrix orbital mou-al202 20
description this command will load the narrow vertical bar characters into the volatile memory. if you have stored your own custom vertical bar data, use the load custom characters command instead to load your custom bar data into the volatile memory. this command will allow you to use the place vertical bar command. note narrow bars have a width of two pixels. remembered no 5.11 initialize wide vertical bar syntax hexadecimal 0xfe 0x76 decimal 254 118 ascii 254 v description this command will load the wide vertical bar characters into the volatile memory. if you have stored your own custom vertical bar data, use the load custom characters command instead to load your custom bar data into the volatile memory. this command will allow you to use the place vertical bar command. note wide bars have a width of ?ve pixels. remembered no 5.12 place vertical bar syntax hexadecimal 0xfe 0x3d [column] [length] decimal 254 61 [column] [length] ascii 254 = [column] [length] parameters parameter length description column 1 the column number. length 1 the length of the bar data. matrix orbital mou-al202 21
description this command will place a bar graph at the speci?ed [column] with the speci?ed [length]. the [length] is the size in pixels of the bar graph. notes 2 a vertical bar style must be initialized before this command is executed. 2 bar graphs may be one directional only. remembered no 6 general purpose output 6.1 introduction general purpose outputs allow you to connect devices, such as leds, to the mou-al202 and supply them with up to 20ma of current at 5v. the mou-al202 has 3 gpos which are software controlled, with functions to turn them on/off and set the power state for the next startup. 6.2 general purpose output off syntax hexadecimal 0xfe 0x56 [num] decimal 254 86 [num] ascii 254 v [num] parameters parameter length description num 1 gpo number. description this command turns off general purpose output [num]. note off means that the output is pulled high. remembered yes 6.3 general purpose output on syntax hexadecimal 0xfe 0x57 [num] decimal 254 87 [num] ascii 254 w [num] parameters parameter length description num 1 gpo number. matrix orbital mou-al202 22
description this command turns on general purpose output [num]. the standard gpos on the mou-al202 output 20ma of current at 5v. note on means the output is pulled low. remembered yes 6.4 set startup gpo state syntax hexadecimal 0xfe 0xc3 [num] [state] decimal 254 195 [num] [state] parameters parameter length description num 1 gpo number. state 1 startup state (0: off, 1: on) description this command will set the startup state for the gpo on the next power up. a value of one will cause the gpo to be off on the next startup while a value of one will cause the gpo to be on. note this command does not affect the current state of the gpo. remembered always 7 display functions 7.1 introduction the mou-al202 employs software controlled display settings, which allow for control over, clearing the screen, changing the brightness and contrast or setting timers for turning it on or off. the combination of these allow you complete software control over your displays appearance. 7.2 display on syntax hexadecimal 0xfe 0x42 [min] decimal 254 66 [min] ascii 254 b [min] parameters parameter length description min 1 minutes before turning the display on (0 to 90). matrix orbital mou-al202 23
description this command turns the backlight on after the [minutes] timer has expired, with a ninety minute maximum timer. a time of 0 speci?es that the backlight should turn on immediately and stay on. when this command is sent while the remember function is on, the timer will reset and begin after power up. remembered yes default 0 7.3 display off syntax hexadecimal 0xfe 0x46 decimal 254 70 ascii 254 f description this command turns the backlight off immediately. the backlight will remain off until a display on command has been received. remembered yes 7.4 set brightness syntax hexadecimal 0xfe 0x99 [brightness] decimal 254 153 [brightness] parameters parameter length description brightness 1 display brightness setting (0 to 255). description this command sets the display [brightness]. if the remember function is on, this command acts the same as set and save brightness. remembered yes default 255 7.5 set and save brightness syntax hexadecimal 0xfe 0x98 [brightness] decimal 254 152 [brightness] parameters parameter length description brightness 1 backlight setting (0 to 255). description this command sets and saves the display [brightness] as default. remembered always matrix orbital mou-al202 24
7.6 set contrast syntax hexadecimal 0xfe 0x50 [contrast] decimal 254 80 [contrast] ascii 254 p [contrast] parameters parameter length description contrast 1 contrast value (0 to 255). description this command sets the displays contrast to [contrast], where [contrast] is a value between 0x00 and 0xff (between 0 to 255). lower values cause on elements in the display area to appear lighter, while higher values cause on elements to appear darker. lighting and temperature conditions will affect the actual value used for optimal viewing. individual display modules will also differ slightly from each other in appearance. in addition, values for optimal viewing while the display backlight is on may differ from values used when backlight is off. this command does not save the [contrast] value, and is lost after power down; but this command has the option of remembering the settings when issued with the remember function on . when this is the case, this command is the same as the set and save contrast command. remembered yes default 128 7.7 set and save contrast syntax hexadecimal 0xfe 0x91 [contrast] decimal 254 145 [contrast] parameters parameter length description contrast 1 contrast value (0 to 255). description this command sets the displays contrast to [contrast], where [contrast] is a value between 0x00 and 0xff (between 0 to 255). lower values cause on elements in the display area to appear lighter, while higher values cause on elements to appear darker. lighting conditions will affect the actual value used for optimal viewing. individual display modules will also differ slightly from each other in appearance. in addition, values for optimal viewing while the display backlight is on may differ from values used when backlight is off. note this command saves the [contrast] value so that it is not lost after power down. remembered yes default 128 matrix orbital mou-al202 25
8 data security 8.1 introduction ensuring that your mou-al202 displays exactly what you want it to can be the difference between a projects success and failure. this is why we incorporate features such as data lock into the mou-al202 with this new feature you now are in control over of how and when settings will be changed so there is no need to worry about the module acting exactly like you expected it to because all the settings may be locked and remembered for the next power up. 8.2 set remember syntax hexadecimal 0xfe 0x93 [switch] decimal 254 147 [switch] parameters parameter length description switch 1 0: do not remember, 1: remember description this command allows you to switch the remember function on and off. to use the remember function, set remember to on, then set all of the settings that you wish to save, settings that are listed as remember: yes support being saved into the non-volatile memory. after you have set all of the commands that you wish to save, you may then cycle the power and check the display settings to ensure that all the settings have been saved. if you wish to use remember again after cycling the power, you must set it to on again. notes 2 writing to non-volatile memory is time consuming and slows down the operation of the display. 2 non-volatile memory has a write limit and may only be changed approximately 100,000 times. remembered no default do not remember matrix orbital mou-al202 26
8.3 data lock syntax hexadecimal 0xfe 0xca 0xf5 0xa0 [level] decimal 254 202 245 160 [level] parameters parameter length description level 1 sets the data lock level description paranoia allows you to lock the module from displaying information, as well as enables the protection of the ?lesystem and module settings. each bit corresponds corresponds to a different lock level, while sending a zero will unlock your display as the following tables explains: bit data lock level description 0-2 reserved should be left 0 3 communication speed lock when this bit is set (1) the baud rate and i2c slave address are locked 4 setting lock when this bit is set (1) the display settings such as backlight, contrast and gpo settings are locked. (internal eeprom) 5 reserved should be left 0 6 command lock when this bit is set (1) all commands but commands 202/203 are locked. (cmd lock) 7 display lock when this bit is set (1) the module is locked from dis- playing any new informa- tion. (text lock) notes 2 sending a new data lock level will override the previous data lock level. 2 data lock levels may be combined. remembered always default 0 examples hex dec binary description 0x00 0 0 unlock 0x50 80 01010000 setting and command lock matrix orbital mou-al202 27
8.4 set and save data lock syntax hexadecimal 0xfe 0xcb 0xf5 0xa0 [level] decimal 254 203 245 160 [level] parameters parameter length description level 1 sets the data lock level description this command will set and save the data lock level. see the data lock section for more information. remembered always default 0 8.5 writes the customer data syntax hexadecimal 0xfe 0x34 [data] decimal 254 52 [data] ascii 254 4 [data] parameters parameter length description data 16 writes the customer data description writes the customer data. 16 bytes of data can be saved in non-volatile memory. remembered no 8.6 reads the customer data syntax hexadecimal 0xfe 0x35 decimal 254 53 ascii 254 5 description reads whatever was written by write customer data. remembered no 9 miscellaneous 9.1 introduction this chapter covers the report version number and read module type commands. these commands can be particularly useful to ?nd out more information about the display module before contacting technical support. matrix orbital mou-al202 28
9.2 read version number syntax hexadecimal 0xfe 0x36 decimal 254 54 ascii 254 6 description this command will return a byte representing the version of the module, see the following table as an example: hex value version number 0x10 version 1.0 0x20 version 2.0 0x42 version 4.2 remembered no 9.3 read module type syntax hexadecimal 0xfe 0x37 decimal 254 55 ascii 254 7 matrix orbital mou-al202 29
description this command will return a hex value corresponding to the the model number of the module see the following table: hex product id hex product id 1 lcd0821 38 lk204-24-usb 2 lcd2021 39 vk204-24-usb 5 lcd2041 3a pk162-12 6 lcd4021 3b vk162-12 7 lcd4041 3c mos-ap-162a 8 lk202-25 3d pk202-25 9 lk204-25 3e mos-al-162a a lk404-55 40 mos-av-202a b vfd2021 41 mos-ap-202a c vfd2041 42 pk202-24-usb d vfd4021 43 mos-al-082 e vk202-25 44 mos-al-204 f vk204-25 45 mos-av-204 10 glc12232 46 mos-al-402 13 glc24064 47 mos-av-402 15 glk24064-25 48 lk082-12 22 glk12232-25-wbl 49 vk402-12 24 glk12232-25-sm 4a vk404-55 26 glk24064-16-1u 4b lk402-25 27 glk19264-7-1u 4c vk402-25 28 glk12232-16-wbl 4d pk204-25 29 glk12232-16-sm 54 xboard-u 31 lk404-at 55 lk202-25-usb 32 mos-av-162a 56 vk202-25-usb 33 lk402-12 57 lk204-25-usb 34 lk162-12 58 vk204-25-usb 35 lk204-25pc 72 glk240128-25 36 lk202-24-usb 73 lk404-25 37 vk202-24-usb 74 vk404-25 remembered no 10 command summary 10.1 text description syntax page auto scroll on hexadecimal 0xfe 0x51 decimal 254 81 ascii 254 q 11 matrix orbital mou-al202 30
description syntax page auto scroll off hexadecimal 0xfe 0x52 decimal 254 82 ascii 254 r 12 clear screen hexadecimal 0xfe 0x58 decimal 254 88 ascii 254 x 12 changing the startup screen hexadecimal 0xfe 0x40 decimal 254 64 ascii 254 @ 12 set auto line wrap on hexadecimal 0xfe 0x43 decimal 254 67 ascii 254 c 13 set auto line wrap off hexadecimal 0xfe 0x44 decimal 254 68 ascii 254 d 13 set cursor position hexadecimal 0xfe 0x47 [col] [row] decimal 254 71 [col] [row] ascii 254 g [col] [row] 13 go home hexadecimal 0xfe 0x48 decimal 254 72 ascii 254 h 14 move cursor back hexadecimal 0xfe 0x4c decimal 254 76 ascii 254 l 14 move cursor forward hexadecimal 0xfe 0x4d decimal 254 77 ascii 254 m 14 underline cursor on hexadecimal 0xfe 0x4a decimal 254 74 ascii 254 j 15 underline cursor off hexadecimal 0xfe 0x4b decimal 254 75 ascii 254 k 15 blinking block cursor on hexadecimal 0xfe 0x53 decimal 254 83 ascii 254 s 15 blinking block cursor off hexadecimal 0xfe 0x54 decimal 254 84 ascii 254 t 15 10.2 special characters matrix orbital mou-al202 31
description syntax page creating a custom character hexadecimal 0xfe 0x4e [refid] [data] decimal 254 78 [refid] [data] ascii 254 n [refid] [data] 16 saving custom characters hexadecimal 0xfe 0xc1 [bank] [id] [data] decimal 254 193 [bank] [id] [data] 17 loading custom characters hexadecimal 0xfe 0xc0 [bank] decimal 254 192 [bank] 18 save startup screen custom characters hexadecimal 0xfe 0xc2 [refid] [data] decimal 254 194 [refid] [data] 18 initialize medium number hexadecimal 0xfe 0x6d decimal 254 109 ascii 254 m 19 place medium numbers hexadecimal 0xfe 0x6f [row] [col] [digit] decimal 254 111 [row] [col] [digit] ascii 254 o [row] [col] [digit] 19 initialize horizontal bar hexadecimal 0xfe 0x68 decimal 254 104 ascii 254 h 20 place horizontal bar graph hexadecimal 0xfe 0x7c [col] [row] [dir] [length] decimal 254 124 [col] [row] [dir] [length] ascii 254 | [col] [row] [dir] [length] 20 initialize narrow vertical bar hexadecimal 0xfe 0x73 decimal 254 115 ascii 254 s 20 initialize wide vertical bar hexadecimal 0xfe 0x76 decimal 254 118 ascii 254 v 21 place vertical bar hexadecimal 0xfe 0x3d [column] [length] decimal 254 61 [column] [length] ascii 254 = [column] [length] 21 10.3 general purpose output description syntax page general purpose output off hexadecimal 0xfe 0x56 [num] decimal 254 86 [num] ascii 254 v [num] 22 general purpose output on hexadecimal 0xfe 0x57 [num] decimal 254 87 [num] ascii 254 w [num] 22 set startup gpo state hexadecimal 0xfe 0xc3 [num] [state] decimal 254 195 [num] [state] 23 matrix orbital mou-al202 32
10.4 display functions description syntax page display on hexadecimal 0xfe 0x42 [min] decimal 254 66 [min] ascii 254 b [min] 23 display off hexadecimal 0xfe 0x46 decimal 254 70 ascii 254 f 24 set brightness hexadecimal 0xfe 0x99 [brightness] decimal 254 153 [brightness] 24 set and save brightness hexadecimal 0xfe 0x98 [brightness] decimal 254 152 [brightness] 24 set contrast hexadecimal 0xfe 0x50 [contrast] decimal 254 80 [contrast] ascii 254 p [contrast] 25 set and save contrast hexadecimal 0xfe 0x91 [contrast] decimal 254 145 [contrast] 25 10.5 data security description syntax page set remember hexadecimal 0xfe 0x93 [switch] decimal 254 147 [switch] 26 data lock hexadecimal 0xfe 0xca 0xf5 0xa0 [level] decimal 254 202 245 160 [level] 27 set and save data lock hexadecimal 0xfe 0xcb 0xf5 0xa0 [level] decimal 254 203 245 160 [level] 28 writes the customer data hexadecimal 0xfe 0x34 [data] decimal 254 52 [data] ascii 254 4 [data] 28 reads the customer data hexadecimal 0xfe 0x35 decimal 254 53 ascii 254 5 28 10.6 miscellaneous description syntax page read version number hexadecimal 0xfe 0x36 decimal 254 54 ascii 254 6 29 matrix orbital mou-al202 33
description syntax page read module type hexadecimal 0xfe 0x37 decimal 254 55 ascii 254 7 29 10.7 command by number command description page hex dec ascii 0x34 52 4 writes the customer data 28 0x35 53 5 reads the customer data 28 0x36 54 6 read version number 29 0x37 55 7 read module type 29 0x3d 61 = place vertical bar 21 0x40 64 @ changing the startup screen 12 0x42 66 b display on 23 0x43 67 c set auto line wrap on 13 0x44 68 d set auto line wrap off 13 0x46 70 f display off 24 0x47 71 g set cursor position 13 0x48 72 h go home 14 0x4a 74 j underline cursor on 15 0x4b 75 k underline cursor off 15 0x4c 76 l move cursor back 14 0x4d 77 m move cursor forward 14 0x4e 78 n creating a custom character 16 0x50 80 p set contrast 25 0x51 81 q auto scroll on 11 0x52 82 r auto scroll off 12 0x53 83 s blinking block cursor on 15 0x54 84 t blinking block cursor off 15 0x56 86 v general purpose output off 22 0x57 87 w general purpose output on 22 0x58 88 x clear screen 12 0x68 104 h initialize horizontal bar 20 0x6d 109 m initialize medium number 19 0x6f 111 o place medium numbers 19 0x73 115 s initialize narrow vertical bar 20 0x76 118 v initialize wide vertical bar 21 0x7c 124 | place horizontal bar graph 20 0x91 145 set and save contrast 25 0x93 147 set remember 26 0x98 152 set and save brightness 24 0x99 153 set brightness 24 0xc0 192 loading custom characters 18 matrix orbital mou-al202 34
command description page hex dec ascii 0xc1 193 saving custom characters 17 0xc2 194 save startup screen custom characters 18 0xc3 195 set startup gpo state 23 11 appendix 11.1 speci?cations 11.1.1 environmental table 50: environmental speci?cations operating temperature 0 c to +50 c storage temperature -20 c to +70 c operating relative humidity 90% max non-condensing vibration (operating) 4.9 m/s 2 xyz directions vibration (non-operating) 19.6 m/s 2 xyz directions shock (operating) 29.4 m/s 2 xyz directions shock (non-operating) 490 m/s 2 xyz directions 11.1.2 electrical table 51: electrical speci?cations supply voltage +5vdc 0.25v backlight on 113ma typical backlight off 44ma 11.2 optical characteristics 11.3 physical layout 11.4 de?nitions msb most signi?cant byte lsb least signi?cant byte matrix orbital mou-al202 35
table 52: optical characteristics character x lines 20 columns x 2 rows module size 116.00 mm x 37.00 mm x 26.43 mm character size 5.55 mm x 3.20 mm active area 79.00 mm x 17.00 mm led backlight life 100,000 hours typical (20,000 hours for white backlight) figure 12: physical diagram matrix orbital mou-al202 36
11.5 contacting matrix orbital telephone sales and support: 1(403)229-2737 on the web sales: http://www.matrixorbital.com support: http://www.matrixorbital.ca forums: http://www.lcdforums.com matrix orbital mou-al202 37

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