Modbus Protocol

Strona 6 z 6
5. Write Multiple Registers
Register
address
Register description
Function description
Position
Type
Format
Access
128
Buzzer, EXTo, Display
settings
Buzzer
3
1-bit
0 – off
1 – on
W
EXTo
4
1-bit
0 – off
1 – on
Dims the display after 5
minutes
5
1-bit
0 – off
1 – on
Attention: Jumper Z2 must be inserted in the socket on the pcb.
6. Example
TXD
Address
Read Input Registers
Starting address
Quantity of
Input Registers
Crc
0x0A
0x04
0x0000
0x001F
0xB0B9
RXD
Address
Read Input Registers
Byte count
Input Registers
Crc
0x0A
0x04
0x3E
….
…