Omron CP1L - 12-2007, Operation Manual

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Failure Diagnosis Functions
Section 6-8
If the message output is selected, an error message can be displayed on the
CX-Programmer at the same time as a FAL error is generated for time moni-
toring.
Time Monitoring
Monitors whether output C goes ON with 10 seconds after input A. If C
doesn’t go ON within 10 seconds, a failure is detected and the Carry Flag
is turned ON. The Carry Flag executes the error-processing block. Also, an
FAL error (non-fatal error) with FAL number 004 is generated.
Logic Diagnosis
FPD(269) determines which input bit in block B is preventing output C from
going ON. That bit address is output to D1000 and D1001.
Auxiliary Area Flags and Words
6-8-3 Simulating System Errors
FAL(006) and FALS(007) can be used to intentionally create fatal and non-
fatal system errors. This can be used in system debugging to test display
messages on Programmable Terminals (PTs) or other operator interfaces.
Use the following procedure.
1,2,3... 1. Set the FAL or FALS number to use for simulation in A529. A529 is used
when simulating errors for both FAL(006) and FALS(007).
2. Set the FAL or FALS number to use for simulation as the first operand of
FAL(006) or FALS(007).
Name Address Operation
Error Code A400 When an error occurs, the error code is stored in
A400.
FAL Error Flag A402.15 Turns ON when FAL(006) is executed.
FALS Error Flag A401.06 Turns ON when FALS(007) is executed.
Executed FAL Num-
ber Flags A360 to
A391 The corresponding flag turns ON when an
FAL(006) error occurs.
Error Log Area A100 to
A199 The Error Log Area contains information on the
most recent 20 errors.
Error Log Pointer A300 When an error occurs, the Error Log Pointer is
incremented by 1 to indicate where the next error
record will be recorded as an offset from the
beginning of the Error Log Area (A100).
Error Log Pointer
Reset Bit A500.14 Turn this bit ON to reset the Error Log Pointer
(A300) to 00.
FPD Teaching Bit A598.00 Turn this bit ON when you want the monitoring
time to be set automatically when FPD(269) is
executed.
C (Diagnostic output)
Carry Flag
(ON for timeout)
Control data
(FAL 004, bit address output for failure)
Monitoring time (0.1-s units): 10 s
First register word of diagnostics output
FPD
#0004
&100
D01000
Error-processing block
FPD(269)
execution condition A
Logic diagnosis
execution condition B