Matrix Orbital VK204-25 Legacy - Manual (Page 25)

6.1.3 Display on (254 66[minutes])
This command turns on the display for a time of [minutes] minutes. If [minutes] is zero (0), the display
will remain on indefinitely.
NOTE The factory default for display is on.
6.1.4 Display off (254 70)
This command turns the display off.
6.1.5 General purpose output off (254 86 [gpo #])
This command turns OFF any of the general purpose outputs. [gpo #] is 1 to 6.
NOTE OFF means that the output floats.
6.1.6 General purpose output on (254 87 [gpo #])
This command turns ON any of the general purpose outputs. [gpo #] is 1 to 6. ON means that the output
is pulled low (ground via 240 ohms).
6.1.7 Read module type (254 55)
This command will return, over the RS-232 interface, the 1-byte model type value of the module. This
command will return a 1-byte hex value. Values for various modules at the time of this publication are as
follows;
Table 10: 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 VFD4041 - 0x0D VK202-25 - 0x0E
VK204-25 - 0x0F GLC12232 - 0x10 GLC24064 - 0x13
GLK24064-25 - 0x15 GLK12232-25 - 0x22 LK404-AT - 0x31
LK402-12 - 0x33 LK162-12 - 0x34 VK204-25PC - 0x35
Matrix Orbital VK204-25 22