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MODBUS Configuration:

Comport Setting :

  • Baudrate : 9600
  • Databits : 8
  • Parity : None
  • Stopbits : 1

Function Code : 0x06

Use Function 06 : Write Single Register to change below settings.

Parameter Name Address Value
LED Module Count 29 1-9 (auto save)
X Offset 30 0 (must be zero)
Protocol 31 EA = 0
MODBUS = 1
(auto save)
Firmware Version 32 -
Restart Controller 33 -
Font Type 35 Regular = 0 (single line)
Big = 1 (dual line)
Brightness 36 TBD
Baudrate 37 *see below
Data Bits 38 7 = 7 Data Bits
8 = 8 Data Bits
9 = 9 Data Bits
Parity 39 0 = None
1 = Odd
2 = Even
Stop Bits 40 1 = 1 Stop Bits
2 = 2 Stop Bits
Modbus Device ID 41 - (auto save)
Save Setting 42 1
Reset Swtich Status 43 0 = switch pressed (read only)
Response Time 44 0 (must be zero)

Baudrate Setting:

0 = 300
1 = 600
2 = 1200
3 = 2400
4 = 4800
5 = 9600
6 = 14400
7 = 19200
8 = 28800
9 = 38400
10 = 56000
11 = 57600
12 = 115200
13 = 128000
14 = 256000
other = 9600

Note : Do not modify any other address value.


Function Code : 0x10

Use Function 16 : Write Multiple Registers to write data on display

Line 1 start adress = 1000
Line 2 start adress = 2000