CP-441 Modbus Master

S

Thread Starter

Saad

I want use CP-441-2 as a Modbus Master to interface with 3rd party devices. Can anyone send me a step by step procedure or a real S7 program? It would be great help.

The sample project does not seem to work. I have tried to work with it.

My application is as follows,

I have a S7-400 CPU with CP441-2. This CP is to be connected to a Bentley Nevada cabinet, which has 3 racks (3 slaves). So I have to multidrop the CP441-2 RS-485 (2-wire) on all 3 racks.

Can anyone send me a sample project that uses the standard Siemens offered Modbus Blocks? As I explained earlier, the sample project does not seem to work.

Thanks for the support.
Regards
SID
 
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