2 
Follow the below work flow to replace C200HX/HG/HE with CJ2. Refer to the reference pages for details.   
 
1)  Preliminary Steps: Take the following steps before starting the replacement work.   
Select the units, programming software, and connecting 
cables to replace C200HX/HG/HE with CJ2.   
The C200H-series Units cannot be used with CJ2. Read the 
reference pages (recommended models and remarks) and 
select the models.   
Load the program, I/O Memory and other settings from the 
C200HX/HG/HE using the programming software and 
connecting cable. 
Converting and modifying data 
Convert the data read from C200HX/HG/HE for CJ2. 
Most of the data can be automatically converted; however, some 
instructions and some Unit data can
not be converted. 
Refer to the reference pages and modify the data and program 
separately. 
4. Reading data from
 
C200HX/HG/HE
 
Prepare the units, programming software, and connecting 
cables. 
5. Converting
 the program for 
CJ
2 
Continue to actual replacement work 
 
 
2)  Actual replacement work: Take the following steps to replace C200HX/HG/HE with CJ2. 
Install the prepared Units instead of C200H-series Units. 
*Refer to the  SYSMAC CJ Series CJ2 CPU Unit Hardware 
USER'S MANUAL (Cat. No. W
472) and user's manuals for 
Special I/O Units and CPU Bus Units for details of installation. 
Transfer the converted data to CJ2 
To check the wiring, operate input and output bits to see if 
they operate correctly. 
Turn ON the power and check the operation.   
Wiring for the installed Units. 
*Refer to the SYSMAC CJ Series CJ2 CPU Unit Hardware 
USER'S MANUAL (Cat. No. W472) and user's manuals for 
Special I/O Units and CPU Bus Units for details of wiring. 
1.  If production is conducted between uploading the program and executing replacement 
work, data handled by the program may change. If so, upload the data right before the 
replacement work, modify data (if necessary), and download it to the new PLC.   
2.  The cycle time of C200HX/HG/HE and CJ2 are different, which may affect system 
operation. If so, it is necessary to adjust cycle time in the PLC Setup.