Communication between two PFC100

CODESYS
1

Hi there,

I’m fresh new to Wago, I need to develop a two-way communication between two PFC100 over ethernet. Which is the most convenient solution?

Thanks in advance

2

Hi, youl’ll find a discussion around this topic here

3

Cristian, Codesys has NVLs or Network Variable Lists that allow for UDP communication between Codesys devices.

4

Thanks Joe

In case I have one sender device and two receivers in the same network, does it work?

5

Yes, it does. The sender NVLs can be setup to broadcast so that multiple receivers can get the same data update.

6

Thanks Adam

Cristian

7

I can add 1 more comment about this topic.

If you add 2 PLC in the same Codesys 3.5 project, you will see that you dont need to store the NVL file inside the Engineering PC. If you setup like this, and create sender and receiver NVL, it will be much more easier for you to establish the communication between 2 PFC100. It will directly store the NVL inside Codesys files automaticaly and if you export the archive project from your pc to another, then it is also easy to maintain the project updates etc.

Suleyman

1 Like
8

Hi Suleyman,

Thanks for the tips, appreciate it!

Cheers

Cristian

1 Like
9

Hi there,

I’d like to test NVL between two PLCs belonging to the same Application. I have only one physical PLC, the second one is Virtual (Simulate Application) and I tried running both but It looks not working: I see the variable “A” in NVL Send on Physical PLC that is changing, but The same variable “A” in NVL Receive on Virtual PLC is not changing. I guess something is wrong with my setup but I also guess about limitation on running two PLC together…

Thanks for your help

Regards