Modbus Rtu Telegram - Siemens SINAMICS G110M Function Manual
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Also See for SINAMICS G110M:
- Operating instructions manual (428 pages) ,
- Original instructions manual (344 pages) ,
- Function manual (244 pages)
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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. The slaves can only transfer data at the request of the master. Slave-to-
slave communication is not possible. The Control Unit always operates as slave.
The following figure shows the structure of a Modbus RTU telegram.
Image 5-9 Modbus with delay times
The data area of the telegram is structured according to the mapping tables.
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Function Manual, 01/2016, FW V4.7 SP6, A5E34229197B AC
Communication via RS485
5.4 Communication using Modbus RTU
125
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