Honeywell HC900 Reference Manual page 246

Function Blocks
ON/OFF Function Block
Outputs
= Working Setpoint in Engineering Units for monitoring
WSP
= Alarm 1
AL1
= Alarm 2
AL2
DIRECT = ON = Direct; OFF = Reverse
MODE = Actual Mode encoded as follows: (Connect to Mode Flags block [MDFL] to encode mode
status.)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
BCO = Back Calculation Output (for blocks used as Cascade Secondary
ATTENTION
When a request to change from Auto to manual is received and:
• the request comes from the operator Interface, the request is ignored.
• the request comes from the Mode Switch (MDSW) function block, the request is retained
and when leaving the Initialization Mode or Local Override Mode the loop will go to manual.
Block properties
Double click on the function block to access the function block properties dialog box.
Configuration parameters
The ON/OFF properties dialog box is divided into 5 tab cards:
GENERAL
START/RESTART
RSP
RANGE/LIMIT
ALARMS
Click on the tab to access the properties for that tab.
232
RSP AUTO
RSP MAN
RSP Initialization Manual (See ATTENTION)
RSP Local Override (See ATTENTION)
LSP AUTO
LSP MAN
LSP Initialization Manual (See ATTENTION)
LSP Local Override (See ATTENTION)
HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07