Redundant AC900F Comunication with S7-1200
how to give Holding Registers or Data Register in Function Block or Harware Structure because its Still not COmmunicating
Though I know it's resolved trying to add details to help others,
Regarding previous question linked here, make sure all the configured IP address belongs to correct subnet mask and ping works accordingly.i.e network is configured well before establishing communication.
use hw interface block in freelance engineering as MODTCPS, keep all setting default. and in FBD use MODS read or write function blocks.
regarding addressing, to read and write holding registers configure AC 900F as modbus TCP slave(server) and mapp address as mentioned below
AC 900F S7-1200
e.g. want to read/write S7-1200 value from/to 40193 holding register then in AC 900F should point to 193.
hope that helps.