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1141
Failure Diagnosis Instructions
Section 3-30
3-30 Failure Diagnosis Instructions
This section describes instructions used to define and handle errors.
3-30-1 FAILURE ALARM: FAL(006)
Purpose
Generates or clears user-defined non-fatal errors. Non-fatal errors do not stop
PLC operation.
With CS1-H, CJ1-H, and CJ1M CPU Units, FAL(006) can also be used to
generate non-fatal system errors.
Ladder Symbol
• Generating or Clearing User-defined Non-fatal Errors
• Generating Non-fatal System Errors (CS1-H, CJ1-H, CJ1M, or CS1D
Only)
Variations
Applicable Program Areas
Operands
The function of the operands when FAL(006) is used to generate/clear user
defined errors is slightly different from the function when FAL(006) is used to
generate system errors (CS1-H, CJ1-H, CJ1M, and CS1D CPU Units only).
Instruction
Mnemonic
Function code
Page
FAILURE ALARM
FAL
006
1141
SEVERE FAILURE ALARM
FALS
007
1149
FAILURE POINT DETECTION
FPD
269
1157
N
S
FAL(006)
N:
FAL number
S:
First message word or
constant (0000 to FFFF)
N
S
FAL(006)
N:
FAL number (value in A529)
S:
First word containing the
error code and error details
Variations
Executed Each Cycle for ON Condition
FAL(006)
Executed Once for Upward Differentiation
@FAL(006)
Executed Once for Downward Differentiation
Not supported.
Immediate Refreshing Specification
Not supported.
Block program areas
Step program areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
Содержание SYSMAC CS1D-CPU**
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