hello sir,

here, i have system having s7 400 redundant communication with allen bradley drive PF700 via profibus having 20-comm-p module on drive..

now i am replacing the PF700 drive by new PF753 drive having same 20-comm-p module..

but in PF700 datalink size having 16bits and in this new drive PF753 model having 32bit size of datalinks and not changeable option, so when setting same node address, its not getting in communication healthy. plc showing system fault.

now how to change the configuration in PLC or make suitable to drive configuration..

please, help,

dchartier

Hello Peter;

The 20-750-ENETR is an Ethernet/IP comm. card for Rockwell drives, and it uses EDS files to transfer comm parameters to an Ethernet/IP processor. The S7-1200 cannot connect to the Ethernet/IP protocol directly over its Ethernet ports. You would need an external gateway to connect the S7-1200 to ethernet/IP.

S7-1200 is a Profinet IO controller on its integrated ports, and the Powerflex does have a Profinet option:

PowerFlex 20-750-PNET Profinet Single-port Option Module

The S7-1200 can alsobe a Profibus-DP master, if you use the CM 1243-5 module, and use the GSD file provided by Rockwell along with a Profibus slave adapter:

PowerFlex 20-750-PBUS Profibus DPV1 Option

Hopw this helps,

Daniel Chartier

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Split from CPU s7-1200 and Allen Bradley Powerflex Drives Comms via Ethernet.

Closed cause question posted twice.

The second thread with the subject PF753 - communication is not healthy is published within the conference Communication / Networks.

Best regards
Jen_Moderator