Honeywell UMC800 Reference Guide

Function Blocks
Function Block Reference Guide 3/9922
2.6 ALM Function Block,
continued
Example
Figure 2-5 Example 1, shows an ALM function block being used for Band Deviation Alarm - A control
loop process variable is compared to the loops working setpoint. A variable is used as the setpoint value to
allow periodic changes. (RSP enabled). The Output contains a tag identification that will be used to identify
the alarm state.
Example 2 shows an ALM function block being used to alarm on PV>SP.
EXAMPLE 1
EXAMPLE 2
Figure 2-5 ALM Function Block Example
Alarm State
CV + RSP Value
CV - RSP Value
CV
Alarm State
PV
Accessed using Variable Edit Screen
Alarm State
H
y
steresis
Out of
RSP Value
PV

Honeywell UMC800 Specifications

General

Brand	Honeywell
Model	UMC800
Category	Controller
Language	English