Communication processor and Modbus TCP
13.4 Universal serial interface (USS) communication
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1165
10. Set the baud rate of the RS485 serial interface: P2010 Index 0= 4 (2400 baud)
5 (4800 baud)
6 (9600 baud)
7 (19200 baud
8 (38400 baud)
9 (57600 baud)
11. Enter the Slave address.
Each drive (a maximum of 31) can be operated over the bus.
P2011 Index 0=(0 to 31)
12. Set the serial link timeout.
This is the maximum permissible period between two incoming data tele-
grams. This feature is used to turn off the inverter in the event of a communi-
cations failure. Timing starts after a valid data telegram has been received. If
a further data telegram is not received within the specified time period, the
inverter will trip and display fault code F0070. Setting the value to zero
switches off the control.
P2014 Index 0=(0 to 65,535 ms)
0=timeout disabled
13. Transfer the data from RAM to EEPROM: P0971=1 (Start transfer) Save the changes
to the parameter settings to EEPROM
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