Siemens PLC (Server) sending data through CP443-1 (1EX20) to Yokogwa ( 2 Cards on Client Side)

Capale

Hi Wuestenraeuber,
you wrote that:

"In the current version of the information is MODB4H only Transferred from / to CP 1, CP the other is on standby and Does not send Telegrams."

I have 412-H System with CP 443-1, I use MODB4H, I'm SLAVE on the network and the redundancy of the ethernet cards (CP 443-1) works correctly, when I try to disconnect 1 ethernet cable, the CP switch to the other.

My CLIENT with his second card, each time send me a messages to verify that my second CP card is "alive", but not answered by me, and the CLIENT system go in allarm. (I tried to set keep alive with different times but nothing has changed).

Is there any parameter to the MODB4H or function for send messages with the stanby CP card?

Thank you for help

Splitted from MODB4H Working .