Mark Interface+ Technisches Handbuch Seite 11

5.0 General Modbus information [8]
Configuration
Protocol
Default slave adress
Baud rate
Data length
Parity
Stop bits
Physical layer
* Factory setting, other value on request.
5.1 Release for writing
To write in the Holding register, a "1" should be written in Holding register 99. A Modbus command
must then be written within 4 seconds. After 4 seconds, Holding register 99 will be set to "0" again.
5.2 Reading holding registers
The holding registers are divided into groups:
Group 1
Group 2
Group 3
The registers must be read per group. Example wrong reading: 98 - 120
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Holding registers 100 – 199
Holding registers 200 – 299
Holding registers 300 – 399
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Modbus RTU
01 *
9600 bps
8
None
1
RS485 (two wire + GND advised)
EN
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