Matrix Orbital PK202-24-USB - Manual (Page 35)

7.1.9 Set Serial Number (254 52 [byte1][byte2])
Modules may be delivered with the serial number blank. In this case the user may set the desired 2 byte
serial number using this one time only command.
The serial number may be set only once. Any future attempt to execute this command will result in no
change and the module will return to the originally set serial number.
7.1.10 Read Serial Number (254 53)
This command will return a 2 byte hex value.
7.1.11 Read Version Number (254 54)
This command will return a 1 byte hex value.
8 Appendix: Command Summary
8.1 General
The operation of the display is controlled by a simple and consistent command set. Commands control;
•
Text display
•
Graphic display
•
Keypad interface
•
Miscellaneous operating parameters
This chapter includes summary tables of all commands.
8.2 Issuing Commands
Commands are issued to the display by the controller. In a test setup, commands can be issued to the
display by means of a BASIC program, using the chr$() function. In the tables below, commands are shown
in hex, ASCII and decimal form. All commands begin with the prefix character 0xFE (254 decimal). These
commands are issued on the serial communications link USB, at the currently defined baud rate.
For example (using a BASIC setup), the user could issue the command to clear the screen on the display
by including the line;
x§y ©P¡¦5€f‚S '2ƒ 6g¡„F @TBS 'Wƒ 6i§i&@
Or, with C the user could (using Zcomm serial library);
†$‡  ¡ wfcˆF‰ '  ! ) ‡  ¡ 2354 ! )X68 " H¡)&@tB
†$‡  ¡ wfcˆF‰ '  ! ) ‡  ¡ 2354 ! )X65I’‘RIS@“B
Matrix Orbital PK202-24-USB 31