Siemens SINAMICS V90 Operating Instructions Manual page 217

Example 2
This example shows the operating procedures when no control word (p29008 = 2) is used in
S control mode.
1.
2.
3.
4.
5.
6.
7.
8.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E36037884-002
Set RS485 bus address for the drive.
• p29004 = 1
Select the Modbus protocol by p29007.
• p29007 = 2
Select Modbus control source by p29008.
• p29008 = 2
Set the transmission baud rate by p29009.
• p29009 = 8 (38400 baud)
Set the drive work mode to S control mode.
Save the parameters and restart the drive.
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).
Set a way for PLC sending message to slaves. Here we use the unicast mode and we
only want to send the message to slave 1.
Note:
If you want to send the message to all slaves, you need to set the slave address to 0
to use the broadcast mode.
Control functions
7.7 Communicating with the PLC
217