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.probus.com/downloads/installation-guide/)
• Information about PROFIBUSDP (http://www.automation.siemens.com/net/html_76/
support/printkatalog.htm)
4.10.11.1 Connecting the PROFIBUS cable to the converter
Procedure
1. Connect the converter to socket X126 via a PROFIBUS cable with the higher-level control.
Overview of the interfaces (Page82)
The maximum permitted cable length to the previous station or the subsequent one is 100 m
at a baud rate of 12Mbit/s.
2. If necessary, connect a 24 V supply voltage to terminals 31 and 32.
The external 24 V supply is only required if communication with the control may not be
interrupted even if the line voltage is switched o.
You connected the converter with the control via PROFIBUS.
❒
Communication with the control system even if the line voltage is switched o
You must supply the converter with 24VDC at terminals 31 and 32 if you wish to maintain
communication with the control system when the line voltage is switched o.
In the case of brief interruptions of the 24 V power supply, the converter may signal a fault
without communications with the control system being interrupted.
4.10.11.2 What do you have to set for communication via PROFIBUS?
Conguring PROFIBUS communication
You require the appropriate engineering system to congure PROFIBUS communication in the
PROFIBUS master.
If required, load the GSD le of the converter into the engineering system.
Installing the GSD (Page115)
Setting the address
Set the address of the PROFIBUS device.
Set the PROFIBUS address (Page115)
Installing
4.10Connecting the interfaces for the converter control
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 113
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