956
Failure Diagnosis Instructions Section 3-28
Disabling Error Log
Entries of Non-fatal
FPD(269) Errors
Normally when the FPD(269) Time Monitoring Function generates a non-fatal
error, the error code and the time that the error occurred are written to the
Error Log Area (A100 through A199). It is possible to set the PLC Setup so
that the non-fatal errors generated by FPD(269) are not recorded in the Error
Log.
Even though the error will not be recorded in the Error Log, the FAL Error Flag
(A402.15) will be turned ON, the corresponding flag in the Executed FAL
Number Flags (A360.01 to A391.15) will be turned ON, and the error code will
be written to A400.
Disable Error Log entries for FPD(269) time-monitoring errors when you want
to record only the system-generated errors. For example, this function is use-
ful during debugging if the FPD(269) and FAL(006) instructions are used in
several applications and the Error Log is becoming full of these errors. The fol-
lowing table shows the PLC Setup setting:
Even if PLC Setup word 129 bit 15 is set to 1 (Do not record FAL Errors in
Error Log.), the following errors will be recorded:
• Fatal errors generated by FALS(007)
• Non-fatal errors from the system
• Fatal errors from the system
• Non-fatal errors from the system generated intentionally with FAL(006)
• Fatal errors from the system generated intentionally with FALS(007)
Setting Monitoring Time
with the Teaching
Function
If a word address is specified for T, the monitoring time can be set automati-
cally with the teaching function. Use the following procedure when a word
address has been set for T.
1,2,3... 1. Turn ON the FPD Teaching Bit (A598.00).
2. FPD(269) will measure the time from the point when the execution condi-
tion for FPD(269) goes ON until the diagnostic output is turned ON.
3. If the measured time exceeds the monitoring time setting, a setting 1.5
times the measured time will be stored in T.
Flags
Item Setting
Name FAL Error Log Registration
Settings 0: Record FAL Errors in Error Log.
1: Do not record FAL Errors in Error Log.
Default setting 0: Record FAL Errors in Error Log.
Times that PLC Setup setting is
read
Every cycle (when an FAL Error occurs)
Name Label Operation
Error Flag ER ON if C is not within the specified range of 0000 to 01FF
or 8000 to 81FF.
ON if T is not within the specified range of 0000 to 270F.
OFF in all other cases.
Carry Flag CY ON if the diagnostic output is still OFF after the monitoring
time has elapsed.
OFF in all other cases.
To Next Page
Loading...
