Configuring the fieldbus
7.3 Communication via PROFIBUS
Converter with control units CU250D-2
92 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
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.
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 address
switches are set to "OFF" (0) or "ON" (1).
a valid address with the address
switches, this address will always be the one that
takes effect and parameter p0918 cannot be changed.
Valid address range: 1 … 125
The positions of the address switches are described in Section: Overview of the interfaces
(Page 35).
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
the expert list in parameter p0918
After you have changed the address in STARTER, carry out RAM to ROM (
).
2. Switch on the inverter power supply and, if available, the 24 V power supply for the
Control Unit.
3. Switch on the voltages again after all LEDs at the inverter have gone dark.
You have now changed the bus address.
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