Multitech MA420 Specifications Page 16

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sigmadue - IEC 61131-3 Function Block Library
8
1-3-5 ALARM RATE
FB Prototype
ALARM_RATE
Input parameters
Output parameters
Description
This function block generate an alarm if the input value changes with a slope rate
grater than the set limits.
Default values
Label Type Description
ENABLE BOOL Function block enable input
VALUE REAL Measure value input
SLOPE_UP REAL UP rate input variation per second
SLOPE_DOWN REAL DOWN rate input variation per second
HYST REAL Hysteresis
Label Type Description
CONFIRM BOOL Function block confirm
DOUT BOOL Active if input slope rate exceeds max./min. limits
ENABLE
VALUE
SLOPE_UP
SLOPE_DOWN
HYST
BOOL
REAL
REAL
REAL
REAL
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BOOL
BOOL
CONFIRM
DOUT
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Input Default value
ENABLE FALSE
VALUE 0.0
SLOPE_UP 0.0
SLOPE_DOWN 0.0
HYST 0.0
Output Default value
CONFIRM FALSE
DOUT FALSE
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