Omron PLC migration: C200H, CQM1 and CS1 to CJ2, NJ and NX

Older Omron C-series PLCs are common on packaging, printing and textile machines. We convert CX-Programmer projects, move I/O to CJ2 or NX, or rebuild on NJ with Sysmac Studio when the machine needs motion control, and replace old NT and NS panels.

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Omron PLC migration: C200H, CQM1 and CS1 to CJ2, NJ and NX

01Paths

From and to

Legacy	Current	Notes
C200H, C200HS, C200HX	CJ2M or CJ2H	Rack and I/O change
CQM1, CPM1A, CPM2A	CP1 or NX1P2	Small machine controllers
CS1	CJ2 or NJ	CX-Programmer conversion
CJ1	CJ2	Mostly compatible
NT and NS HMIs	NA or NB series	Screens rebuilt

02Watch for

What needs care

Special I/O units and their memory areas
Host link and DeviceNet networks
Motion and positioning units if moving to NJ

03Repair meanwhile

Keeping the old one running

We repair Omron CPUs, power supplies and I/O units, NT and NS panels, and Omron servo drives. See PLC and HMI repair.

04FAQ

Questions

Is moving to NJ worth it?

When the machine has servo axes or needs better data handling, yes. For simple logic, CJ2 or NX1P is enough.

Can CJ1 programs run on CJ2?

Usually with little change, after review.

05Enquiry

Send the nameplate or encoder label

A clear photo of the motor nameplate and, if the cover is off, the encoder label is enough to start. We reply with whether it can be repaired and a quote.