User Manual
Logic Functions - Book 2
SEQUENCE BLOCK
10-17
07
Input Error Unacked Quality
(CERRUQ)......................................................................... – WR
If the bad input error diagnostic is enabled, this status indicates if the quality of the
unacknowledged diagnostic is GOOD or BAD. Only writeable in DEBUG.
GOOD 0 Quality when the block STATE is RUN or HOLD.
BAD 1 Quality when the block STATE is OFF.
08
Input Error Active
(CERRA) ............................................................................................. – WR
If the calculation error diagnostic is enabled, the active status indicates if the diagnostic is
active even after acknowledgement. Only writeable in DEBUG.
NO 0 Diagnostic error is not active.
YES 1 Diagnostic error is active.
09
Input Error Active Quality
(CERRAQ) ............................................................................. – WR
If the bad input error diagnostic is enabled, this status indicates if the quality of the active
diagnostic is GOOD or BAD. Only writeable in DEBUG.
GOOD 0 Quality when the block STATE is RUN or HOLD.
BAD 1 Quality when block STATE is OFF
10
Calculation Error
(CERRS) ...............................................................................................CWR
When a calculation error (calculation overflow, divide by zero, etc.) is detected in a calculation
to evaluate a transition expression, the block completes the calculation using some
reasonable value (+ or – maximum value for overflows, etc.), reports the diagnostic error as
“CALCULATION ERROR”, and takes action in accordance with the configuration of Attribute
No. 42, Calculation Error Action.
ENABLED 0 Calculation error is enabled.
SUPPRESS 1 Calculation error is suppressed.
11
Calculation Error Unacked
(CERRU) .............................................................................. – WR
If the calculation error diagnostic is enabled, the unacknowledged status indicates if the
diagnostic is or is not acknowledged. Only writeable in DEBUG.
NO 0 Diagnostic error is acknowledged.
YES 1 Diagnostic error is unacknowledged.
12
Calculation Error Unacked Quality
(CERRUQ) .............................................................. – WR
If the calculation error diagnostic is enabled, this status indicates if the quality of the
unacknowledged diagnostic is GOOD or BAD. Only writeable in DEBUG.
GOOD 0 Quality when the block STATE is RUN or HOLD.
BAD 1 Quality when the block STATE is OFF.
13
Calculation Error Active
(CERRA)................................................................................... – WR
If the calculation error diagnostic is enabled, the active status indicates if the diagnostic is
active even after acknowledgement. Only writeable in DEBUG.
NO 0 Diagnostic error is not active.
YES 1 Diagnostic error is active.