Operating Instructions

Table Of Contents
Configuring the fieldbus
7.2 Communication via PROFIBUS
Converter with CU230P-2 Control Units
124 Operating Instructions, 04/2014, FW V4.7, A5E34257946B AA
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.
7.2.3
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.
7.2.4
Setting the address
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).
If you have specified 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 67).