Communication via RS485
5.4 Communication using Modbus RTU
5.4.2
Modbus RTU telegram
Description
For Modbus, there is precisely one master and up to 247 slaves. The master always starts
the communication. Slaves send data when requested to do so by the master. Slave-to-slave
communication is not possible. The inverter always operates as slave.
The following figure shows the structure of a Modbus RTU telegram.
Figure 5-11
The data area of the telegram is structured according to the mapping tables.
130
Modbus with delay times
Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
Fieldbuses