Siemens SINAMICS G120C Operating Instructions Manual page 91

Communication with the control, even when the line voltage is switched off
If, in your plant or system, communication with the control system should continue to function
even when the line voltage is switched off, then you must externally supply the
inverter/Control Unit with 24 V DC. To do this, use terminals 31 and 32 – or connector X01.
You can find additional details in the operating instructions for the inverter or the Control
Unit.
Configuring the communication using SIMATIC S7 control
● If the inverter is listed in the hardware library of HW-Conifg, you can configure the
communication in the SIMATIC control.
● If the inverter is not listed in the hardware library, you can either install the newest
STARTER version or install the GSD of the inverter through "Extras/GSD-Install file" in
HW-Config. See also GSD
(http://support.automation.siemens.com/WW/view/en/22339653/133100).
When you have installed the GSD, configure the communication in the SIMATIC control.
Setting the address
Valid address range: 1 ... 125
The positions of the address switches are described in Section: Overview of the interfaces
(Page 65).
Procedure
To change the bus address, proceed as follows:
1. Set the address using one of the subsequently listed options:
– using the address switch
– from an operator panel using parameter p0918
– in STARTER using screen form "Control Unit/Communication/PROFIBUS" – or using
2. Switch off the inverter supply voltage.
SINAMICS G120C converter
Operating Instructions, 07/2015, FW V4.7 SP3, A5E34263257B AC
the expert list in parameter p0918
After you have changed the address in STARTER, carry out RAM to ROM (
You set the PROFIBUS address of the inverter using
the address switch on the Control Unit, in parameter
p0918 or in STARTER.
In parameter p0918 (factory setting: 126) or in
STARTER, you can only set the address, if all ad-
dress switches are set to "OFF" (0) or "ON" (1).
If you have specified a valid address with the ad-
dress switches, this address will always be the one
that takes effect and parameter p0918 cannot be
changed.
Installing
4.8 Connecting the inverter
).
87