Matrix Orbital LK202-25 Legacy - Manual (Page 23)

LK202-25 rev 3 23
6.1.11 Read module type (254 55)
This command will return, over the RS-232 interface, the model type value of the module. Values for
various modules at the time of this publication are as follows:
LCD0821 - 0x01 LCD2021 - 0x03 LCD1641 - 0x04
LCD2041 - 0x05 LCD4021 - 0x06 LCD4041 - 0x07
LK202-25 - 0x08 LK204-25 - 0x09 LK404-55 - 0x0A
VFD2021 - 0x0B VFD2041 - 0x0C VFD4021 - 0x0D
VK202-25 - 0x0E VK204-25 - 0x0F GLC12232 - 0x10
GLC12864 - 0x11 GLC128128 - 0x12 GLC24064 - 0x13
GLK12864-25 - 0x14 GLK24064-25 - 0x15 GLK128128-25 - 0x21
GLK12232-25 - 0x22 LK404-AT - 0x31 VFD1621 - 0x32
LK402-12 - 0x33 LK162-12 - 0x34 LK204-25PC - 0x35
6.1.12 Set RS232 port speed (254 57 [speed])
This command sets the GLK's RS232 port to the specified [speed]. The change takes place immediately.
[speed] is a single byte specifying the desired port speed. Valid speeds are shown in the table below. The
GLK can be manually reset to 19,200 baud in the event of an error during transmission (including
transmitting a value not listed below) by setting the "manual override" jumper on the GLK controller board
during power up (see section 1.7). This command is ignored until this jumper is removed again.
Speed Value Speed
FF Hex 1200 baud
81 Hex 2400 baud
20 Hex 9600 baud
0F Hex 19200 baud
6.1.13 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.
Upon the execution of this command, the module will echo these two bytes back over the RS-232
interface. 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.
6.1.14 Read Serial Number (254 53)
This command will return, over the RS-232 interface, the serial number of the module as it was previously
stored.