Honeywell HC900 Reference Guide

Function Blocks
NOT Function Block
224 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
NOT Function Block
Description
The NOT label stands for the NOT Boolean logic function or Logic Inverter.
This block is part of the
Logic and Fast Logic categories..
Function
Reverse state of a digital input (X).
• OUT = Opposite state of X
If X = ON, then:
OUT = OFF.
IF X = OFF, then:
OUT = ON.
Input
X
= Digital signal
Output
OUT
= Complement of input signal
Block properties
Double click on the function block to access the function block properties dialog box.
Example
HFigure 60 shows a Function Block Diagram using a NOT function block. Use a single input to place a loop
in manual when the input is ON (1) and return to Auto when OFF (0).
Figure 60 NOT 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