13 Troubleshooting
13.2.3 Processing Flow for a Ladder Program Error
13-8
13.2.3 Processing Flow for a Ladder Program Error
A serious failure has probably occurred if the S1 and S2 indicators are lit (red) on the MP2100/MP2100M. Place
the MP2100/MP2100M in Stop Status (MP2100: 2 of mode switch 1 ON; MP2100M: 6 of mode switch 1 ON)
and investigate the problem.
Use the following procedures to check the error.
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①
Check by Type of Serious Failure
Check the contents of SW00050 (Error Type) to determine if the error is a
system error or a user program error.
②
Check by Type of Error Program
Check the contents of SW00055 (Program Type) to determine if the error
occurred in a drawing or in a function.
③
Check the Error Drawing
Check the contents of SW00054 (Error Task) and SW00056 (Drawing
No.) to find the error drawing.
④
Check the Error Function
The error occurred in a function if SW00056 (Drawing No.) reads 0100H.
Check the contents of SW00057 (Error Task) and SW00058 (Drawing
No.) to find the error drawing.
Check SW00059 (Function Referencing Drawing Step No.) for the STEP
number where an operation error occurred.
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⑤
Check Whether an Operation Error
Occurred
Check the error count of all drawings at SW00080 to SW00088. Operation
errors are occurring if the count is going up.
⑥
Check the Details and Location of
Operation Errors
If an operation error occurs, the *00 (H00,
L00, i00, and A00) drawings will execute.
These drawings can also be used to
correct or confirm operation.
1. Check Error Details
Check error codes for drawings where the error count is going up.
DWG.A: SW00111
DWG.H: SW00143
DWG.I: SW00127
DWG.L: SW00175
2. Check the DWG Number
Check the error DWG number for the DWG number where an error
occurred.
DWG.A: SW00122 DWG.H: SW00154
DWG.I: SW00138
DWG.L: SW00186
3. Check the Function Referencing DWG Number and Function
Referencing STEP Number if an error occurred in a function.
DWG.A: SW00123,4 DWG.H: SW00155,6
DWG.I: SW00139,40 DWG.L: SW00187,8
⑦
Correct the Program
Correct the program at the point where the error occurred.