Failure Diagnosis Instructions - Omron SYSMAC CS Series Programming Manual

Failure Diagnosis Instructions

3-26 Failure Diagnosis Instructions

Instruction Symbol/Operand
Mnemonic
Code
FAILURE ALARM
FAL(006)
FAL
@FAL
006
N: FAL number
M: 1st message
word
SEVERE
FAILURE ALARM FALS(007)
FALS
007
N: FALS number
M: 1st message
word
FAILURE POINT
DETECTION
FPD(269)
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.
N
Execution of
M
FAL(006)
generates a
non-fatal er
ror with FAL
number N.
Generates user-defined fatal errors. Fatal errors stop PC operation.
N
Execution of
M
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-processing
T
block (optional)
R
Diagnostic output B
Section 3-26
Location
Execution
condition
Output
Required
Output
Required
Output
Required
121