celichi
Lifetime Supporting Member
Hello Everybody,
I am working on a system that is made up of 3 ML1500's (LRPs) connected to NET-ENIs and 3 PanelView Plus 1000's (Touch, Ethernet, Serial). I will be configuring the HMIs to talk to the LRPs over serial to free up Ethernet Connections.
The PLCs need to talk to each other over Ethernet for status and some interlocks (heartbeats will be done correctly).
There will be a PC running FT Historian and RSLinx pulling a dozen analog values from each PLC.
There will be a second PC running RSLinx G/W pulling status from the 3 PLCs to a Foxboro I/A system.
I am concerned about the number of connections through the NET-ENI's. In fact, I am pretty sure the communications will lock up.
PLC A Read and Write message instructions to PLC B uses 1 outgoing connection in PLC A Net-Eni and 1 incoming connection in PLC B.
PLC A Read and Write message instructions to PLC C uses 1 outgoing connection in PLC A Net-Eni and 1 incoming connection in PLC C.
Not taking into account the Historian, Foxboro or programming connections I only have...
2 incoming and 2 flexible connections in PLC A.
1 incoming, 2 outgoing and 2 flexible connections in the PLC B
1 incoming, 2 outgoing and 2 flexible connections in the PLC C
So, this will not work, I am pretty sure as soon as someone opens RSLinx on the Engineering Work Station to go online, I will run out of incoming connections on PLC A.
Questions...
I am looking for an alternative to the NET-ENIs that can handle more connections, does a product exist?
Are my connections calculations correct?
Sadly, I can not go to Compact, Control or ML1400 or ML1100.
Best regards to the group!
Paul
I am working on a system that is made up of 3 ML1500's (LRPs) connected to NET-ENIs and 3 PanelView Plus 1000's (Touch, Ethernet, Serial). I will be configuring the HMIs to talk to the LRPs over serial to free up Ethernet Connections.
The PLCs need to talk to each other over Ethernet for status and some interlocks (heartbeats will be done correctly).
There will be a PC running FT Historian and RSLinx pulling a dozen analog values from each PLC.
There will be a second PC running RSLinx G/W pulling status from the 3 PLCs to a Foxboro I/A system.
I am concerned about the number of connections through the NET-ENI's. In fact, I am pretty sure the communications will lock up.
PLC A Read and Write message instructions to PLC B uses 1 outgoing connection in PLC A Net-Eni and 1 incoming connection in PLC B.
PLC A Read and Write message instructions to PLC C uses 1 outgoing connection in PLC A Net-Eni and 1 incoming connection in PLC C.
Not taking into account the Historian, Foxboro or programming connections I only have...
2 incoming and 2 flexible connections in PLC A.
1 incoming, 2 outgoing and 2 flexible connections in the PLC B
1 incoming, 2 outgoing and 2 flexible connections in the PLC C
So, this will not work, I am pretty sure as soon as someone opens RSLinx on the Engineering Work Station to go online, I will run out of incoming connections on PLC A.
Questions...
I am looking for an alternative to the NET-ENIs that can handle more connections, does a product exist?
Are my connections calculations correct?
Sadly, I can not go to Compact, Control or ML1400 or ML1100.
Best regards to the group!
Paul