How many PLCs can be connected?

[Lingyue]

Dear Armin,

Thanks a lot for your reply.

Now I want to choose the mode1, means the netPI or NIOT-E-TPI51 as PROFINET device to exchange data over PROFINET protocol. So, it is always a 1:1 relationship between netIOT Edge Gateway and PLC Master, is it correct?

Best regards
Lingyue