Moxa MPC-2240X [60/64] Uart control commands

MPC-2240 Hardware Manual UART Commands for Display Control

B-2

UART Control Commands

BRI: Set the Minimum Brightness for the Display Panel

This command sets the minimum brightness value, from 0x00 (0%) to 0x31 (100%). LEN=one byte.

Example：

Command to set 30% brightness.

0x07 0xFF 0x42 0x52 0x49 0x01 0x1B 0x10 0xEF

BRL: Set the LED Brightness for the Touch Keypad

This command is to set the brightness value for the LED touch keypad. The range starts from 0x00 to 0x31 (0%

- 100%). The default brightness value of the touch keypad will be changed in the ratio of the panel backlight

brightness. You can send ? to query the current value of the led brightness value. LEN=one byte.

Example：

Command to set 100% Brightness.

0x07 0xFF 0x42 0x52 0x4C 0x01 0x18 0x31 0xCE

BRM: Set the Maximum Brightness for the Display Panel

This command is to set the maximum brightness value. The range starts from 0x00 (0%) to 0xFF (100%).

LEN=one byte.

Example：

Command to set 88% Brightness.

0x07 0xFF 0x42 0x52 0x4D 0x01 0x17 0xE0 0x1F

BRT: Set the Current Panel Brightness

This command is to set maximum brightness of the panel. The range starts from 0x00 (0%) to 0xFF (100%).

The default value is 0xFF.

Please note whenever the MPC-2240 has been restarted, the BRT value will be reset to 100%.If the BRT value

has been changed (the BRT value does not equal to 0xff), the ECDIS function will not be supported and the

ECDIS function keys will be disabled and turned off.

If the data and data checksum of sending are incorrect, the data field of replying is the current BRT value.

LEN=one byte.

Example：

Command to set 40% Brightness.

0x07 0xFF 0x42 0x52 0x54 0x01 0x10 0x66 0x99

ACK was set to 40% Brightness

0x06 0xFF 0x42 0x52 0x54 0x01 0x11 0x66 0x99

NAK was default Brightness 100%

0x15 0xFF 0x42 0x52 0x54 0x01 0x02 0xFF 0x00

BRU: Glass Display Control-Brightness Button

This command is to set led brightness value of the touch keypad. The range starts from 0x00 (0%) to 0xFF

(100%). The default brightness value of the touch keypad will be changed in the ratio of the panel backlight

brightness.

You can send ? to query the current value of the led brightness value. LEN=one byte.

Example：

Command to set 100% Brightness.

0x07 0xFF 0x42 0x52 0x55 0x01 0x0F 0xFF 0x00