Honeywell HC900 Reference Guide

Function Blocks
ADD Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 11
2/07
ADD Function Block
Description
The ADD label stands for Addition Mathematical Operation (2 Inputs).
This block is part of the Math category.
Function
Add two inputs (X, Y) to get an output.
• OUT = X + Y
Input
X = First Analog Input
Y = Second Analog Input
Output
OUT = Sum of analog values
ADD example
HFigure 2 shows a Function Block Diagram using an ADD function block to find the total flow rate as the
sum of Flow 1 and Flow 2.
Figure 2 ADD function block example

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