Honeywell HC900 Reference Guide

Function Blocks
WCON Write Constant Function Block
430 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
WCON Write Constant Function Block
Description
The WCON label stands for Write Constant.
This block is part of the
Auxiliary category
Function
Writes the numerical value of selected configuration parameter to a given control block. Select the index
number of the required parameter from the specific function block reference data and enter it in the
appropriate field in the “Write Constant Properties” dialog box.
• If EN is ON, change the selected parameter to the value of X.
Input
X
= Value to be written (invalid for parameters of type other than BOOL or REAL)
EN = Enable command
Block properties
Double click on the function block to access the function block properties dialog box.

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet