Matrix Orbital GLK12232-25-WBL User Manual

Page 29

7.1.7

General purpose output off (254 87 [gpo #])

This command turns OFF either of the General Purpose Outputs. [gpo #] is 1 for G1 or 2 for G2. For G1

OFF allows the output to ’float’. For G2 OFF pulls the output to +5V.

7.1.8

Set I

C address 254 51 [address])

This command sets the I

C write address of the module. This value must be an even number and the

read address is one higher. For example if the I

C write address is set to 0x50, then the read address is 0x51.

The change in address is immediate. This address is 0x50 by default, and is reset temporarily back to that
value when the ’manual over-ride’ jumper is used on power up.

7.1.9

Read module type (254 55)

This command will return, over the RS-232 interface, the model type value of the module. It will return

a 1-byte hex value. Values for various modules at the time of this publication are as follows;

Table 9: Module Values

LCD0821 - 0x01

LCD2021 - 0x03

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

GLC24064 - 0x13

GLK24064-25 - 0x15

GLK12232-25-WBL - 0x22

GLK12232-25-SM - 0x24

LK404-AT - 0x31

LK402-12 - 0x33

LK162-12 - 0x34

LK204-25PC - 0x35

7.1.10

Set RS-232 port speed (254 57 [speed])

This command sets the display’s RS-232 port to the specified [speed]. The change takes place immedi-

ately. [speed] is a single byte specifying the desired port speed. Valid speeds are shown in the table below.
The display 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 over-ride’ jumper on the display controller
board during power up. This command is ignored until this jumper is removed again.

Matrix Orbital

GLK12232-25-WBL