Honeywell TPPL Modbus TCP, TPPL Modbus RTU Installation And Setup Manual

Installation and Setup Guide

TPPL Modbus RTU and TCP

i

Revision History

Revision

Comment

Date

Issue 01

First Issue

28/01/2016

ii

Disclaimer

In no event shall Honeywell be liable for any damages or injury of any nature or kind, no matter how caused, that arise
from the use of the equipment referred to in this manual.

Strict compliance with the safety procedures set out and referred to in this manual, and extreme care in the use of the
equipment, are essential to avoid or minimise the chance of personal injury or damage to the equipment.

The information, figures, illustrations, tables, specifications, and schematics contained in this manual are believed to be
correct and accurate as at the date of publication or revision. However, no representation or warranty with respect to such
correctness or accuracy is given or implied and Honeywell will not, under any circumstances, be liable to any person or
corporation for any loss or damages incurred in connection with the use of this manual.

The information, figures, illustrations, tables, specifications, and schematics contained in this manual are subject to change
without notice.

Unauthorised modifications to the gas detection system or its installation are not permitted, as these may give rise to
unacceptable health and safety hazards.

Any software forming part of this equipment should be used only for the purposes for which Honeywell supplied it. The
user shall undertake no changes, modifications, conversions, translations into another computer language, or copies
(except for a necessary backup copy).

In no event shall Honeywell be liable for any equipment malfunction or damages whatsoever, including (without limitation)
incidental, direct, indirect, special, and consequential damages, damages for loss of business profits, business
interruption, loss of business information, or other pecuniary loss, resulting from any violation of the above prohibitions.

Warranty

Honeywell Analytics warrants the Touchpoint Plus system against defective parts and workmanship, and will repair or (at
its discretion) replace any components that are or may become defective under proper usage within 12 months from the
date of commissioning by a Honeywell Analytics approved representative* or 18 months from shipment from Honeywell
Analytics, whichever is sooner.

This warranty does not cover consumable, batteries, fuses, normal wear and tear, or damage caused by accident, abuse,
improper installation, unauthorized use, modification or repair, ambient environment, poisons, contaminants or abnormal
operating conditions.

This warranty does not apply to sensors or components that are covered under separate warranties, or to any 3

rd

-party

cables and components.

Any claim under the Honeywell Analytics Product Warranty must be made within the warranty period and as soon as
reasonably practicable after a defect is discovered. Please contact your local Honeywell Analytics Service representative
to register your claim.

This is a summary. For full warranty terms please refer to the Honeywell Analytics’ Genera l S tatem ent of Lim ited Pr odu ct
Warranty, which is available on request.

* A Honeywell Analytics approved representative is a qualified person trained or employed by Honeywell Analytics, or a
qualified person trained in accordance with this manual.

Copyright Notice

Honeywell is the registered trademark of Honeywell Automation and Control Systems (ACS).

Touchpoint is a registered trademark of Honeywell Analytics (HA).

Find out more at www.honeywellanalytics.com

MODBUS RTU AND TCP INSTALLATION AND SETUP

MAN0995_Iss 1_01/16 Touchpoint Plus
Pt. No. 3011M5027_1 iii Modbus Installation Guide

Contents

1 Introduction ..................................................................................................................................... 5

1.1 How to Use this Document............................................................................................... 5

1.2 Overview ............................................................................................................................ 5

2 Safety Notices ................................................................................................................................. 6

3 How to Install the Bus Interface Board (BIB) (Repair, Upgrade or OEM) ................................... 6

3.1 Modbus RTU Cable ........................................................................................................... 8

3.2 Modbus TCP Cable ........................................................................................................... 8

3.3 Modbus RTU and TCP Electrical Connections ............................................................... 8

3.4 Modbus Chaining / Multi-Drop Mode ............................................................................... 9

4 How to Configure Modbus RTU / TCP Parameters ..................................................................... 10

4.1 How to Configure the Master / Host PC ........................................................................ 10

4.2 How to Configure the TPPL Modbus RTU Settings ..................................................... 10

4.3 How to Configure the TPPL Ethernet TCP Settings ..................................................... 10

4.4 Modbus Register Allocation for Function 02 – Read Input Status ............................. 11

4.5 Modbus Register Allocation for Function 04 – Read Input Registers ........................ 11

4.5.1 Analogue Registers (Integer) ....................................................................................... 11

4.5.2 Analogue Registers (Float) .......................................................................................... 12

4.5.3 Animation Registers ..................................................................................................... 12

4.6 Register Allocation for Function 03 / 06 / 16 – Read / Write Holding Registers ........ 13

4.6.1 Query Poll Registers .................................................................................................... 13

4.6.2 Query Types Available ................................................................................................. 14

4.7 Modbus RTU Command Types ...................................................................................... 14

4.7.1 Modbus RTU Command Poll Registers ....................................................................... 15

4.8 Exception Responses ..................................................................................................... 16

MODBUS RTU AND TCP INSTALLATION AND SETUP

MAN0995_Iss 1_01/16 Touchpoint Plus
Pt. No. 3011M5027_1 iv Modbus Installation Guide

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MODBUS INSTALLATION

MAN0995_Iss 1_01/16 Touchpoint Plus
Pt. No. 3011M5027_1 5 Modbus Installation Guide

1 Introduction

Modbus is a well supported digital data communication protocol that provides a set of standard commands by which
system data can be communicated.

Touchpoint Plus (TPPL) is supplied with Modbus software as a default, but the Modbus Bus Interface Board (BIB part
number TPPLORTU) is an optional extra for those customers who want to control TPPL via the Modbus protocols.

Normally the BIB is factory or OEM installed, but it can be fitted or replaced in the field by an authorised Honeywell Field
Engineer, or by a qualified person trained in accordance with the TPPL Technical Handbook and these instructions.

1.1 How to Use this Document

This document is provided for the use of Honeywell personnel and Honeywell approved 3rd-parties only. Its utilisation
requires a high level of computer skill and a competent knowledge of Industrial Gas Detection Systems and Touchpoint
Plus.

Incorrect use of this document or its procedures could result in unexpected and dangerous consequences. Please read the

Disclaimer and Warranty before proceeding.

This document is designed to be a technical reference source that should be used in conjunction with the following
documents:

• http://www.honeywellanalytics.com

.Touchpoint Plus Technical Handbook. (Search for ‘Touchpoint Plus’ then click

‘Technical Handbook’.)

• http://modbus.org/docs/PI_MBUS_300.pdf. Modicon Modbus Protocol Reference Guide. (Check your download
folder if the page appears blank.)

This document uses [Button name] and Menu>Item>Command to signify tasks that are carried out on the TPPL
Touchscreen.

1.2 Overview

The TPPL Modbus Interface provides a facility for digital communication between the TPPL and an external computer
system.

Principal features:

• Operates as a Modbus Remote Terminal Unit (RTU) slave device node.

• Operates as a Modbus TCP slave device node.

• Can be used in Modbus Multi-Drop mode.

• Supports functions 02, 03, 04, 06 and 16 of the Modbus protocol.

• Provides sensor gas readings and alarm status for Fault, Inhibit, Warning, A1, A2, A3, STEL, LTEL and Rate alarms

from all input channels in the system.

• Supports commands to Inhibit, Reset and Acknowledge for Modbus RTU only.

• Asynchronous serial link configurable for baud, bit-rate and parity.

Notes:

• The Modbus broadcast commands are not supported and will be ignored. i.e. it has no output registers at this time.

• There are no standard Modbus function formats defined for the communication of data from a gas detection system

so the host computer system must be programmed to interpret the signal and status data made available by TPPL.

• It is recommended that the host computer system should, as a minimum, be programmed to use Function 02 to
collect alarm and status data from all TPPL channels.

• Full details of the Modbus protocol can be found in the Modicon Modbus Protocol Reference Guide PI-MBUS-300
mentioned above.

• The addressing conventions and register values used follow those set by Modicon. The first digit of the on-board
memory address refers to the data type stored in the register and therefore defines the Modbus function command
that should be used when polling it.