Honeywell HC900 Reference Guide

Function Blocks
BOOL Boolean Logic Function Block
86 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
BOOL Boolean Logic Function Block
Description
The BOOL label stands for Free Form Logic.
This block is part of the
Logic category.
Function
Read digital inputs A through H and calculates the output based on specified Boolean logic function.
• Offers the following Boolean logic functions:
AND entered as
*
OR entered as +
NOT entered as not
XOR entered as ^
( - Left parenthesis
) - Right Parenthesis
Inputs
A
= Block Input 1
B = Block Input 2
C = Block Input 3
D = Block Input 4
E = Block Input 5
F = Block Input 6
G = Block Input 7
H = Block Input 8
Output
ERR =
error during execution of the equation. Error = ON. No Error = OFF.
OUT = Calculated Output (ON or OFF)
A maximum of 50 tokens per equation is allowed. A token is an operator, a variable, or a pair of
parentheses.

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