Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual page 1197

Failure Diagnosis Instructions
Description
1158
Area
EM Area without bank
EM Area with bank
Indirect DM/EM
addresses in binary
Indirect DM/EM
addresses in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
FPD(269) performs time monitoring and logic diagnosis. The time monitoring
function generates a non-fatal error with the specified FAL number if the diag-
nostic output is not turned ON within the specified monitoring time. The logic
diagnosis function indicates which input is preventing the output from being
turned ON.
Next instruction block
Note *The logic diagnosis block begins with the first LD (not LD TR) or LD NOT
instruction after FPD(269) and ends with the first OUT (not OUT TR) or other
right-hand instruction.
C
--- E00000 to E32767
--- En_00000 to En_32767
(n = 0 to C)
--- @ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
--- *D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Specified values #0000 to #270F
only
(binary)
---
---
--- ,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to
+2047 ,IR15
DR0 to DR15, IR0 to IR15
Time monitoring function:
Starts timing when execution condition A goes ON.
Generates a non-fatal error if output B isn't turned
ON within the monitoring time.
Execution
condition A
Logic diagnosis block*
Logic diagnosis
execution condition C
Logic diagnosis function
Determines which input in C prevents
output B from going ON.
Section 3-30
T R
---
T
R
Error-processing
block (optional)
Diagnostic output B