Specifications
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1. Program changeover method
4.3 Correction of program and checking of operation
4.3.1 Checking and correction of program
z After changing the PLC type to FX3 series, check the program by referring to the program conversion
cautions of each PLC, and check the program contents and correct affected functions.
z To check the sequence program, from the GX Works2 menu, select items to check in “Tool” -> “Check
program...” or “Check parameter...”, and execute.
z Use of simulation function
By using the simulation function of GX Works2, the operation of the program can be checked on the
personal computer before downloading it to the PLC.
From the GX Works2 menu, select “Debug” -> “Start/Stop Simulation”. GX Simulator2 starts, and
debugging is possible by examining the operation of the simulated PLC.
4.3.2 Checking operation
z After completing changing the program to FX3 series, use the replacement hardware to run the
program, then check and tune functions and operation timing of applicable equipment.
When checking operation, pay attention to the differences in functions mentioned in this document, and
make sure operation conforms with the designed specication.