Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) Algorithms, Tables and Sequential Logic Functions User Manual

Page 67

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Logic Functions - Book 2

TIMER BLOCK

8-59

12

Low Limit Status Quality (LLSTATQ) .............................................................................. – WR
See Bad Inputs Accepted.

GOOD

0

Quality when block is RUN or HOLD and inputs are good.

BAD

1

Quality when block is OFF or and input is bad.

13

Reset Command (RESCMD) ............................................................................................ – WR
The reset command message resets the timer when the message is received (TRUE or
FALSE value written to the reset command attribute). When a reset occurs, the time value is
set to the value of the reset value input.

14

Reset Value Input (RSVAINP) ...........................................................................................CWR
Specifies the value to which the timer is reset.

Msec-time

Fixed value for timer when the timer is reset.

LSP

Msec-time variable used to set value for timer when the timer is reset.

15

Reset Input (RESINP) ....................................................................................................... C – R
The timer reset source allows the timer to be remotely reset on a low to high transition. When
the timer is reset, the time value is set to the reset input value and the limit statuses are
cleared (if the reset input value is equal to or beyond the limit associated with the timer
direction, the limit status flag is set). A timer can be reset via the reset source whether or not
the timer enable source has the timer enabled, but not when either the block or loop state is
not RUN. The time value will not be updated while the remote reset input is set.

NONE

No reset of timer is allowed. Attribute is neither readable nor writeable.

LSP

Discrete variable is used to reset timer to the reset input value when reset

goes from FALSE to TRUE.

16

Disable Input (DISINP).......................................................................................................CWR
The timer enable source allows the timer to be remotely enabled/disabled. When the timer is
not enabled, the timer value is not updated. When a timer is enabled, the timer value is
updated starting with the first scan cycle after enable is true.

FALSE

0

Timer Block is set at enabled and timer proceeds in specified
direction.

TRUE

1

Block is set at disabled and timer holds its value (unless it is reset).

LSP

Discrete variable is used to enable/disable timer operation.

17

Direction Input (DIRINP)....................................................................................................CWR

UP

1

Specifies timing direction as UP.

DOWN

0

Specifies timing direction as DOWN.

LSP

Discrete variable is used to set timer direction (UP = 1).

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