YASKAWA JEPMC-MP2300-Y Series User Manual page 553

12.4.3 Correcting User Program Errors
A serious error may have occurred if the ALM and ERR indicators on the front of the MP2300 Basic
Module are lit red. Set the MP2300 in stop status (STOP switch on DIP switch 6: ON) and investi-
gate the error.
Use the following procedure to investigate ladder program errors.
(1) Investigate type of serious
error.
(2) Investigate type of program in
which there is an error.
(3) Investigate the drawing with
the error.
(4) Investigate the function with
the error.
(5) Check to see whether an
operation error has occurred.
(6) Investigate the type of
operation error and its location.
If an operation error occurs, the
(H00, L00, i00, and A00) drawings
will execute. These drawings can
also be used to correct or confirm
operation.
(7) Correct the Program.
Check the contents of SW00050 (Error Type) to determine if the type of the
serious error is a system error or a user program error.
Check the contents of SW00055 (Program Type) to determine if the error is in a
drawing or function.
Check the contents of SW00054 (Error Task) and SW00056 (Drawing Number)
to determine the drawing with the error.
If SW00056 (Drawing Number) contains 0100H, the error is in a function.
Check the contents of SW00057 (Error Task) and SW00058 (Drawing Number)
to determine the drawing with the error.
Check the contents of SW00059 (Function Referencing Drawing Step No.) to
determine the step number with the operation error.
Check the error count for each drawing in SW00080 to SW00088. If errors
have been counted, an operation error has occurred. Go to (6).
1. Check Error Details
Check error codes for drawings where the error is counted.
DWG.A: SW00111, DWG.H: SW00143
DWG.I: SW00127, DWG.L: SW00175
2. Check the Drawing Number
Check the error drawing number for the drawing number where an error
00
occurred.
DWG.A: SW00122, DWG.H: SW00154
DWG.I: SW00138, DWG.L: SW00186
3. Errors in Functions
Check the Function Referencing Drawing Number and Function Referencing
STEP Number.
DWG.A: SW00123, 4; DWG.H: SW00155, 6
DWG.I: SW00139, 40; DWG.L: SW00187, 8
Correct the program at the point where the error occurred.
12.4 Troubleshooting System Errors
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