Siemens SINAMICS V90 Operating Instructions Manual page 187

Example 1
This example shows the operating procedures when we the use setpoint and control word
from Modbus as the Modbus control source in S control mode.
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SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 07/2015, 6SL3298-0AV60-0BP0
Set RS485 bus address for the drive.
• p29004 = 1
Select the Modbus protocol by p29007.
• p29007 = 2
Select Modbus control source by p29008.
• p29008 = 1
Set the transmission baud rate by p29009.
• p29009 = 8 (38400 baud)
Save the parameters and restart the drive.
Set the drive work mode to S control mode.
Configure the PLC parameters.
Note:
Keep the PLC baud rate the same as the drive setting.
Set even parity check for the PLC (parity = 2).
Control functions
7.7 Communicating with the PLC
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