Omron C200hs Io Table

Hi,
I need change the IO table of a C200HS PLC composed by a main rack
and one expansion rack.
I tried with CX-programmer and also with Syswin using "create",but these programms don't recognize any board in the expansion rack.
I tried also to configure manually the expansion rack but there is
no posibility to download the new configuration to the PLC.
Any suggestions?

Was the PLC in program mode?

C200H/C200HS series did not "require" an IO Table.
You should be able to go into Program mode than back to Run mode.
Hope this will help.

Thanks bluebyu and gtsuport for your reply.
I solved the problem.
The power supply of the expansion rack was faulty so the CX-Programmer
couldn't recognize any module using "Create IO Table".