Failure Diagnosis Instructions - Omron CJ - PROGRAMMING MANUAL 08-2008 Programming Manual

Failure Diagnosis Instructions

3-28 Failure Diagnosis Instructions

Instruction Symbol/Operand
Mnemonic
Code
FAILURE ALARM
FAL(006)
FAL
@FAL
006
N: FAL number
S: 1st message
word or error
code to gener-
ate
SEVERE
FALS(007)
FAILURE ALARM
FALS
007
N: FALS number
S: 1st message
word or error
code to gener-
ate
FAILURE POINT
FPD(269)
DETECTION
FPD
269
C: Control word
T: Monitoring time
R: 1st register
word
Generates or clears user-defined non-fatal errors. Non-fatal errors
do not stop PC operation.
Also generates non-fatal errors with the system.
N
S
Execution of
FAL(006)
generates a
non-fatal er-
ror with FAL
number N.
Generates user-defined fatal errors. Fatal errors stop PC operation.
Also generates fatal errors with the system.
N
S
Execution of
FALS(007)
generates a
fatal error
with FALS
number N.
Diagnoses a failure in an instruction block by monitoring the time
between execution of FPD(269) and execution of a diagnostic output
and finding which input is preventing an output from being turned ON.
C
Time monitoring function:
T
Starts timing when execution condition A goes
R
ON. Generates a non-fatal error if output B
isn't turned ON within the monitoring time.
Execution
condition A
Next instruction block
Logic diagnosis block*
Logic diagnosis
execution condition C
Logic diagnosis function
Determines which input in C
prevents output B from going ON.
Function
FAL Error Flag ON
Corresponding Executed FAL
Number Flag ON
Error code written to A400
Error code and time written to Error
Log Area
ERR Indicator flashes
Message
displayed on
Programming
Console
FALS Error Flag ON
Error code written to A400
Error code and time/date
written to Error Log Area
ERR Indicator lit
Message displayed
on Programming
Console
Error-pro-
T cessing
block (op-
R
tional)
Diagnostic output B
Section 3-28
Location
Execution condition
Output
Required
Output
Required
Output
Required
147