I am trying to communicate IGNITION 7.3.7 with Siemens S7-400 PLC.
But PLC remains disconnected. PLC gets pinged though.Ignition Error logs say: the connection is refused.
Please advice on how to get rid of this. Is there any specific setting in Ignition for S7-400 plc communication?If yes please specify.
Hi,
is there a solution to the Problem yet ?
I have the same Problem, CPU-Slot number is set correctly.
i have a CP443-1 (6GK7 443-1EX10-0XE0) and Ignition V 7.7.4
I’m having the same issues. I’m running Ignition 7.9.4 on a Windows Server 20016 machine, from which we can ping our SIMATIC S7-400 PLCs (each connected via CP 443-1).
Nevertheless, we don’t seem to be able to connect to them. Status is repetitively switching between Disconnecting and Connecting states. We verified all parameters, and they all seem ok, including the CPU slot.
We finally got to the bottom of the issue. Here’s the summary:
In order to test the connection, we tried running the following command line from the Ignition Server:
telnet IP 102
where IP is the PLC’s IP address and 102 is the standard port used to communicate with the SIMATIC S7-400 PLCs. If an error is returned, then this means that the Ignition server is not able to communicate with that IP address via port 102.
We had to contact the Network Administrator, who opened the communications via port 102 for us, after which all started working.
It’s interesting to note, that prior to that, there were no messages being displayed under Status->Diagnostics->Logs. Only after the networking issue was resolved, we starting seeing messages in the Logs section.