PROFIBUS DP communication module
9.1 Introduction
3RW44 soft starters
150 Manual, 03/2017, NEB535219502000/RS-AB/008
● You have configured an infeed module with integrated S7 station, e.g. with CPU315-2
DP.
● STEP 7 (V 5.1 or higher + hotfix 2) is fully installed on your PC or programming device.
● You are proficient in STEP 7.
The PROFIBUS DP communication module can only be operated on 3RW44 devices
with product version "E12" or higher, implemented for devices from production date
130601 onwards.
IT systems with ground-fault monitoring:
3RW44, product version ≤ *E06* and the PROFIBUS DP communication module must
not be used in this network configuration. 3RW44 soft starters from product version
*E07* onwards can be used in combination with the communication module. However,
the phase voltage values (UL-N) and phase-to-phase voltage values (UL-L) may be
displayed incorrectly on the measured value display of the 3RW44.
For 3RW44 PROFIBUS DP communication module with product version < *E03*:
use of the 3RW44 with PROFIBUS on redundant controllers and Y-Link:
The 3RW44 acts like a DPV0 slave on Y-link. Parameter assignment is only possible via
the GSD file and only cyclic data is transmitted, no data sets or alarms.
For 3RW44 PROFIBUS DP communication module, product version *E04* or higher:
As from this version, DPV1 operation (read/write data sets and alarms) is also possible
downstream from a Y-link.
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