User Manual

Logic Functions - Book 2
TIMER BLOCK
8-57
Table 8-6. Timer Block Attributes, Valid Values, Mnemonics, and Data Types
Attribute Mnemonic Valid Values CWR Data Type Attr
Version VERSION 1 – – R Long State 00
Block Length BLKLEN – – R Count 01
State
STATE RUN (0), HOLD (1), OFF (2),
DEBUG (3)
CWR Short State 02
Bad Inputs Accepted
BADINP NO (0), YES (1) CWR Discrete 03
Auto Wrap WRAP NO (0), YES (1) CWR Discrete 04
Timer Limits, High
HILIM Msec_time value CWR Msec time 05
Timer Limits, Low
LOLIM Msec_time value CWR Msec time 06
Timer Value
TIME Msec_time value CWR Msec time 07
Timer Value Quality TIMEQ GOOD (0), BAD (1) – WR Discrete 08
High Limit Status
HLSTAT FALSE (0), TRUE (1) CWR Discrete 09
High Limit Status Quality HLSTATQ GOOD (0), BAD (1) – WR Discrete 10
Low Limit Status
LLSTAT FALSE (0), TRUE (1) CWR Discrete 11
Low Limit Status Quality LLSTATQ GOOD (0), BAD (1) – WR Discrete 12
Reset Command RESCMD FALSE (0), TRUE (1) – WR Discrete 13
Reset Value Input RSVAINP Msec_time value or LSP CWR Msec time 14
Reset Input
RESINP NONE or LSP C – R Discrete 15
Disable Input DISINP FALSE(0), TRUE(1) or LSP CWR Discrete 16
Direction Input
DIRINP DOWN (0), UP (1) or LSP CWR Discrete 17
02 State (STATE).....................................................................................................................CWR
See Section 2.4.1, State Changes for additional information.
RUN 0 Normal Operation. Block is executed.
HOLD 1 Block is not executed. Qualities retain previous values.
OFF 2 Block is not executed. Qualities will be BAD.
DEBUG 3 Block is not executed. No fields are updated. All attributes are
writeable.
03
Bad Inputs Accepted (BADINP)........................................................................................CWR
See Section 2.3.2, Data Quality for additional information.
NO 0 The direction, disable and reset inputs are examined on every
execution of the timer. If any of these inputs are bad, then the timer
does not update its outputs and the output qualities are set bad. The
reset value input is only used if the timer is being reset, and therefore
does not effect the timer function until a reset occurs. When a reset
does occur (command or input) and the reset value input quality is
bad, the outputs are not updated and the qualities are set bad. The
reset input and reset value input effect the outputs and qualities on
the cycle they are detected. Since the direction and disable inputs
are effectively delayed, their qualities do not effect the outputs until
the next scan.
YES 1 Block runs its algorithm without a check on input quality.