Siemens SINAMICS G120X - Connecting to PROFIBUS; Maximum Cable Length

Overview of the interfaces (Page 99)
Table 4-15 Maximum cable length
Modbus RTU USS BACnet MS/TP
1200 m 1200 m for a baud rate up to
38400 bit/s and maximum of 32
nodes
1200 m
1000 m for a baud rate of 187500
bit/s and a maximum of 30 nodes
Further information
The precondition for error-free communications is that the first and last station are supplied with
power.
Communication is maintained if you withdraw individual slaves from the fieldbus without
interrupting the cable.
4.2.13 Connecting to PROFIBUS
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The PROFIBUS DP interface has the following functions:
● Cyclic communication
● Acyclic communication
● Diagnostic alarms
General information on PROFIBUS DP can be found in the Internet:
● PROFIBUS user organization (http://www.profibus.com/downloads/installation-guide/)
● Information about PROFIBUS DP (http://www.automation.siemens.com/net/html_76/
support/printkatalog.htm)
Wiring
4.2 Control interfaces
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 147