Omron C200H RT201 Slave

Hi

I need some help and advice with the above unit. We are not communicating with the host plc for some unknown reason. We have inputs on both units but no outputs. 485 data physically ok.

That sounds pretty vague.
No outputs?

S.T

Make sure the terminator is on at the RT201 end.

From past experience, if the unit has been working for sometime and stopped working without someone's help, the RT201 probably needs repair at your local Omron repair shop.

You can download manuals for all these things here
Omron Manuals

1. What is the status of the indicators on the C200H-RT2101? On, Off or Flashing?
2. What is the positions of the dip switches on the C200H-RT201?
3. What is the status of the indicators on the C200H-RM201 at the main rack? On, Off or flashing?