Spirit flow-x, Справочник по функциям

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Flow-X─ Function Reference
4-247
Flow-X General functions - fxLimitAlarm
fxLimitAlarm
Description
The function applies alarm limits on any value.
Function inputs and outputs
Function inputs Remark EU SW tag Range Default
Name Optional tag name
Input value Must be linked to
another cell Same as
linked cell INPVAL -1e11..1e11 0
Low limit value Same as
Input
value LLIM -1e11..1e11 -1e11
High limit value Same as
Input
value HLIM Low limit value
.. 1e11 -1e11
Low low limit
value Same as
Input
value LLLIM -1e11.. Low limit
value 1e11
High high limit
value Same as
Input
value HHLIM High limit value
.. 1e11 1e11
Deadband Same as
Input
value 0..1e11 0
Enabled Enables or disables the
alarm True or false True
Warning
behavior Determines the warning
behavior when the lo
and hi limit are violated:
1: No warnings, just
alarms
2: Warn on lo limit
3: Warn on hi limit
4: Warn on lo and hi limit 1
Function outputs Remark EU SW tag Alarm Fallback
Alarm status 0: Normal
1: Low alarm
2: High alarm
3: Low low alarm
4: High high alarm - ALMSTS
LALM
HALM
LLALM
HHALM
Logic
The order of priority in setting the alarm status output is as follows:
1. If process value is below the ‘Low low limit value’ then the status becomes ‘3: Low low
alarm’.
2. Else if process value is above the ‘High high limit value’ then the status becomes ‘4: High high
alarm’.
3. Else if process value is below the ‘Low limit value’ then the status becomes ‘1: Low alarm’.
4. Else if process value is above the ‘High limit value’ then the status becomes ‘2: High alarm’
and the ‘High high alarm’ is raised
5. Else the status becomes ‘0: Normal’.