Xylem 205546 User Manual

Modbus Communication Modules

Modbus Communication Modules

for Displays

Order no. 205546

Modbus and RS 485 Communication Module

EN 6.81 Modbus Communication Module 205546 Manual 1212

Manual

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Modbus Communication Modules

Table of Contents

1. Introduction 3

2. Communication Modules 4

2.1 Modbus and RS 485 Communication Module . . . . . . . . . . . . . . 4

2.1.1 Version Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.2 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.3 Physical mounting of Modbus module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.4 Configuration Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1.5 Connection Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.5.1 One Connected Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.5.2 Three Connected Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1.5.3 Three Connected Units and One Common Display . . . . . . . . . . . . . . . . . . . 14

3. Order Numbers 15

4. Register Lists 16

4.1 MagFlux Register List . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2 Oxix / SuSix Register List . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3 mA-Bus Converter List . . . . . . . . . . . . . . . . . . . . . . . . . . 25

MagFlux®, SuSix® and Oxix® are registered trademarks of MJK Automation A/S, Denmark.

Modbus® is a registered trademark of the Modbus Organization

Bluetooth® is a registered trademark of Bluetooth SIG.

EN 6.81 Modbus Communication Module 205546 Manual 1212

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Modbus Communication Modules

1. Introduction

Thank you for choosing MJK Modbus communication module. We have done
our utmost to design and manufacture a high quality product that should
satisfy your requirements.

The MJK modem and communication modules is easy to install in MJK
MagFlux©, SuSix© and Oxix© units and to put into service. However, read this
manual first to learn more about the specifications, how to install and how to
operate the equipment.

The equipment must be handled and operated as instructed by the manufac­turer, MJK Automation A/S, to ensure stable operation.

The MJK modem and communication modules can be obtained in several dif­ferent versions supporting standard communication types and protocols like
PSTN, GSM, GPRS, RS 232, RS 485, Modbus RTU, Profibus PA and Blue­tooth. This manual covers Modbus RS 485.

You can always contact your local representative or the MJK hot lines for
advice and guidance:

• Europe Tel.: [phone] E-mail: [e-mail]

• Denmark Tel.: [phone] E-mail: [e-mail]

• Norway Tel.: [phone] E-mail: [e-mail]

• Holland Tel.: [phone] E-mail: [e-mail]

• USA Tel.: [phone] E-mail: [e-mail]

Visit our web sites at www.mjk.com to learn more about MJK Automation
A/S, our products and the people behind them.

MJK Automation A/S is a Xylem brand.

1. Introduction

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Modbus Communication Modules

2. Communication Modules

2.1 Modbus and RS 485 Communication Module

PCB no.: 510327-xxx
Communication RS485

GND

3V3

Figure 1. Modbus and RS 485 Communication Module

2.1.1 Version Requirements

The following software, firmware and hardware versions (or higher) are re­quired for displays without an installed communication module:

• Converter HW ver.: 807000

• Converter FW ver.: 842009-001

• Display HW ver.: 807056

• Display FW ver.; 841018-000

• Text file ver.: 841513-011

• MJK-Field Link ver.: 840110-48

Termination

ON

OFF

GNDB

GND

RS485

B

A

GND

5V

RTS

GND

Rx
Tx
3V3

5V5

EN 6.81 Modbus Communication Module 205546 Manual 1212

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Modbus Communication Modules

2.1.2 Technical Specifications

Specification Description

Mounting With 4 screws on transmitter’s I/O board

Protection IP 20

Dimensions 51 x 82 mm ( H x W)

Connectors One 5-position plugable screw terminal and one 20-pin bus

connector

Temperature -20 to +60 °C

Settings One “Termination” dip switch

LEDs White LEDs for “5V”, “Rx”, “Tx” and “3V3”

Power consump. Approx. 0.18 VA

Com. type RS 485 asynchronous, half duplex

Baud rate 300, 1200, 4800, 9600, 19200, 38400, 57600, 115200

Parity Even, odd, none

Stop bits 1 , 2

Modbus ID offset 0 - 240

Protocol Modbus RTU

Table 1. Specifications - Modbus and RS 485 Communication Module

2. Communication Modules

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Modbus Communication Modules

2.1.3 Physical mounting of Modbus module

1. Dismount screws

2. Remove back plate

EN 6.81 Modbus Communication Module 205546 Manual 1212

3. Remove lid using a
screwdriver

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Modbus Communication Modules

4. Align pins with contacts

5. Check all pins is in place
in the Modbus slot and
check placing for screws

2. Communication Modules

6. Secure module using 4
screws

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Modbus Communication Modules

7. Ensure all 4 screws are
in place

8. Make sure the rubber
protection for cable is in
place

EN 6.81 Modbus Communication Module 205546 Manual 1212

9. Remount the back using
the 3 screws

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