Honeywell HC900 Reference Guide

Function Blocks
AO Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 79
2/07
AO Function Block
Description
The AO label stands for a milliamp Analog Output.
This block is part of the
I/O Blocks category.
Function
Range High and Range Low are used to specify the Engineering Unit values for 100 % and 0 % of this
block’s input span. For reverse outputs, Range High may be set to a value less than Range Low.
The output range high and range low values (0-20 maximum) set the milliamp output values that
correspond to the 0 % to 100 % span limits of the inputs.
Input
IN
= Analog value
Output
OUT
= Converted value sent to specified real I/O address.
FAIL = Failed Output indication - Module Error
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