M800V/M80V Series PLC Development Manual
5 Peripheral Development Environment (GX Works2)
5.6 Developing Simple Project
5.6.4.2 Writing Operation
When the writing of ladders to the CNC controller is executed on GX Works2, the CNC controller converts the ladders to
ladder machine codes specific to CNC as they are written.
When devices and instruction formats that are not supported by the CNC controller are used, a conversion error is generated.
Even if a conversion error is generated, writing is not stopped. Transfer up to the final step is completed by converting the
instructions with error into NOP instruction (No operation instruction).
Note
(1) Ladders with an error cannot be run for safety reasons.
5.6.4.3 Operation and Check on Conversion Error
Operation on conversion error
The following dialog is displayed on the GX Works2 screen on conversion error.
An attempt to run the PLC fails with an alarm on the CNC.
If a program file with a conversion error is displayed on the "Read from PLC" screen, the file name and title will change and be
displayed as shown below.
When this program file is read to GX Works2, saved as a file named "ERRLD-00". ("ERRLD-XX": XX represents the error file
number that is sequentially added from 0 in hexadecimal notation.)
Note
(1) When developing program with labels, error file names cannot be checked on the "Read from PLC" dialog.
Check the error file name on the "Delete PLC Data" screen.
ERRLD-00
(1)
CAUTION
Do not read to and use on GX Works2 the ladder files for which a conversion error is generated.
Unintended data are included, and malfunction may result.
< -- MAIN : Convert ERROR.
(2)
131
(1) File name at error + Error No. (HEX)
(2) Title containing the name of source file
IB-1501614-B