Honeywell Touchpoint 4 User Manual

Touchpoint 4 Serial Communication Protocol Issue 1 09/07
CONTENTS
INTRODUCTION 1
OVERVIEW 1
GLOSSARY 2
COMMUNICATION PORT 2
ADDRESS SETTING PROCEDURE 3
PROTOCOL SPECIFICS 3
Packet Length 4
Checksum 4
ACK/NAK Handshake 5
TIME DIAGRAM 6
PROTOCOL PACKET DEFINITION 6
PACKET FORMAT 6
Start Code 6
Slave Address 6
Length 6
Command 6
Data 7
Checksum 7
GENERIC DATA FORMATS 7
Date Format
7
Time Format 7
Date/Time Examples: 7
Concentration Code: 7
Concentration Data Format Code 8
Concentration Example: 8
GENERIC RESPONSES 8
ACK - 0x01 8
NAK - 0x21 9
Bad Packet - 0x66 9
Unknown CMD –0x67 9
PROTOCOL COMMAND DEFINITION 9
 HANDSHAKECOMMAND–0X40      9
Command packet to instrument: 9
Example: 9
Response packet from instrument: 9
Example: 9
 GETUNITANDPOINTSSTATUS-0X30     10
Command packet to instrument:      10
Example:         10
Response packet from instrument:      10
Example: 11

Honeywell Touchpoint 4 Specifications

General

Brand	Honeywell
Model	Touchpoint 4
Category	Gas Detectors
Language	English