Honeywell UMC800 Reference Guide

Function Blocks
3/99 Function Block Reference Guide 79
2.25 FSYS Function Block
Description
The
Fast Logic Status Block (FSYS)
is a function block and is part of the
Fast Logic
category. It provides
read access to controller status values including those related to the Fast Logic execution cycle. The output
may be connected to function block inputs. The outputs may also be connected to signal tags for operator
interface monitoring. The FSYS System Monitoring block is assigned block number 250. It looks like this
graphically on the Control Builder:
Table 2-24 describes the outputs for the Fast Logic system status block.
Table 2-24 Fast Logic System Status Block Outputs
Output Description
NEWSTART Newstart is ON for one full scan cycle of Fast Logic control block execution,
following a cold start of the controller. For example: starting after a change
from program to run.
RESTART Restart is ON for one full scan cycle of Fast Logic control block execution,
following the warm start of the controller.
ALM ACTIV Alarm Active is ON if any operator panel alarm is ON.
ALMUNACK Alarm unacknowledge is ON if any operator panel’s alarm is unacknowledged.
HWOK Hardware OK is ON if there are no faults.
LOWBTRY Low Battery is ON if the battery is low, Off when battery is good.
HI TEMP High CJ Temperature is ON if the CJ temperature is high.
COMFAIL Communications Failure is ON if there is a failure to the operator interface.
BAD BLOCK Bad Block is ON when one or more blocks are not operating properly.
OFF LINE Off Line is ON when the controller mode switch is in the Off Line mode.

Honeywell UMC800 Specifications

General

Brand	Honeywell
Model	UMC800
Category	Controller
Language	English