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

Page 55

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Logic Functions - Book 2

PROCESS ALARM BLOCK

8-47

02

State (STATE).....................................................................................................................CWR
All block state changes are reported as events. 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. Most attributes are
writeable.

03

Bad Inputs Accepted (BADINP) ........................................................................................CWR
See Section 2.3.2, Data Quality for additional information.

NO

0

Block checks data quality on the alarm input and if it is BAD, the
unacknowledged and active outputs are left unchanged and their
qualities are set to bad. When the quality of the acknowledge input is
bad, it simply means this signal is ignored and has no affect on the
unacknowledged and active outputs or their qualities.

YES

1

Block runs its algorithm without a check on input quality and output
quality is set to good.

04

Alarm Priority (PRIORITY) ................................................................................................CWR
0 to 255

When 0, the alarm unacknowledged field is suppressed and left at
false even when an alarm becomes active. When 1 through 255, the
priority value is ignored by this block; however, it can be used by PC-
30 for alarm reporting (e.g. alarms of different priorities may be
displayed in different colors).

05

Trip Condition (TRIPCOND)..............................................................................................CWR
The trip condition is used to compare the alarm input value with the trip value in the alarm
calculation.
LESS

0..Alarm becomes active when the Alarm Input is LESS than (<)

the Trip Value and becomes clear when the Alarm Input is
GREATER OR EQUAL than (>=) the Trip Value plus any
Hysteresis value.

LESS OR EQUAL

1..Alarm becomes active when the Alarm Input is LESS

OR EQUAL than (<=) the Trip Value and becomes clear
when the Alarm Input is GREATER than (>) the Trip
Value plus any Hysteresis value.

GREATER

2..Alarm becomes active when the Alarm Input is

GREATER than (>) the Trip Value and becomes clear
when the Alarm Input is LESS OR EQUAL than (<=) the
Trip Value minus any Hysteresis value.

GREATER

OR

EQUAL 3..Alarm becomes active when the Alarm Input is

GREATER OR EQUAL than (>=) the Trip Value and
becomes clear when the Alarm Input is LESS than (<)
the Trip Value minus any Hysteresis value.

EQUAL

4..Alarm becomes active when the Alarm Input is EQUAL

to (==) the Trip Value and becomes clear when the
Alarm Input is NOT EQUAL to (!=) the Trip Value.