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Failure Diagnosis Instructions
Section 3-30
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 (A59800).
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
The following table shows relevant words and flags in the Auxiliary Area.
Precautions
When the time monitoring function is being used, the execution condition for
FPD(269) must remain ON for the entire monitoring time set in T.
The execution condition for FPD(269) must be made up of a combination of
normally open and normally closed inputs.
The error-processing block is optional. When an error-processing block is
included, be sure to use outputs or other right-hand instructions. LD and LD
NOT cannot be used at this point.
FPD(269) can be used more than once in the program, but each instruction
must have a unique register (R) setting.
The monitoring time is refreshed only when FPD(269) is executed. If the cycle
time is longer than 100 ms, the monitoring time will not be refreshed normally
and FPD(269) will not operate correctly because the monitoring time is
updated in units of 100 ms.
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.
Name
Address
Operation
FAL Error Flag
A40215
ON when a non-fatal (FAL) error is registered in time
monitoring.
Executed FAL
Number Flags
A36001 to
A39115
When a non-fatal (FAL) error is registered in time mon-
itoring, the corresponding flag will be turned ON. Flags
A36001 to A39115 correspond to FAL numbers 0001
to 01FF.
Error Log Area
A100 to
A199
The Error Log Area contains the error codes and time/
date of occurrence for the most recent 20 errors,
including errors generated by FPD(269).
Error code
A400
When an error occurs its error code is stored in A400.
The error codes for FAL numbers 0001 to 01FF are
4101 to 42FF, respectively.
If two or more errors occur simultaneously, the error
code of the most serious error will be stored in A400.
FPD Teaching
Bit
A59800
Turn this bit ON when you want the monitoring time to
be set automatically (teaching function) when
FPD(269) is executed.
Summary of Contents for CJ1G-CPUxx
Page 3: ...iv N o t i c e ...
Page 5: ...vi ...
Page 21: ...xxii Conformance to EC Directives 6 ...
Page 35: ......
Page 1131: ...1110 CJ series Instruction Execution Times and Number of Steps Section 4 2 ...