Hi,

I have a old Siemens 400 CPU system with CPU414-3 PN/DP, these CPU has not Ethernet port, and I don`t want to upgrade the CPU right now.

I was thinking installing CP 443-1 to connect S7-400 to ind.Ethernet” (6GK7443-1EX30-OXE0) in the existing rack.

Will I be able to connect the Stahl panel to these card and use modus TCP communication?

Stahl has not problem to communicate with 400 and a CP card? I have used a lot of these panel against 300 and 1200 without any problems.

hi,

this is what I found to Modbus TCP with CP443:

Modbus PtP - Standardized communication of PCS 7 with Third-Party Systems

How do you use the blocks for MODBUS/TCP communication via an Industrial Ethernet CP of S7-300 and S7-400 in STEP 7 Professional (TIA Portal)?

I also recommend you to use the search bar in the upper right. There are some more needful application samples and FAQ.

hope this helps,

regards,