Weidmuller SL-MOD-GW User Manual

SL-MOD-GW
Modbus/TCP Gateway

Usermanual

SL-MOD-GW
Modbus/TCP Gateway: User manual

No part of this material may be reproduced or transmitted in any form or by any means or used to make any derivative work without
express written consent from the copyright holders.

Weidmller is a registered trademark of Weidmller Interface GmbH & Co. KG. Modbus is a registered trademark of Schneider Automation
Inc. All other product and brand names mentioned in this document may be trademarks or registered trademarks of their respective owners.

UMSLMODGW-1006 iii

Contents

Important user information .................................................................................................................... v

Safety Precautions ........................................................................................................................ v

Document conventions ................................................................................................................. vi

1 Introduction ....................................................................................................................................... 1

1.1 Features ................................................................................................................................ 2

1.2 Quick start checklist ............................................................................................................... 2

2 Description ........................................................................................................................................ 3

2.1 LED indicators ........................................................................................................................ 3

3 Installation ........................................................................................................................................ 5

3.1 Regulatory notes .................................................................................................................... 5

3.2 Unpacking, handling and storage ............................................................................................ 5

3.3 Before connecting anything ..................................................................................................... 5

3.4 DIN rail mounting and removal ................................................................................................ 6

3.5 Mounting rules ........................................................................................................................ 6

3.6 Powering the SL-MOD-GW ..................................................................................................... 7

3.7 Wiring the RS-485/422 interface .............................................................................................. 7

3.8 Wiring the RS-232 interface .................................................................................................... 8

3.9 Connecting Ethernet ............................................................................................................... 9

4 Ethernet & IP configuration .............................................................................................................. 11

4.1 IP setup using a terminal program like HyperTerminal ............................................................. 11

4.2 Temporarily changing the IP settings on your PC .................................................................... 12

5 Web browser based management .................................................................................................... 15

5.1 Connecting to the SL-MOD-GW ............................................................................................ 15

5.2 Monitoring and diagnostic ..................................................................................................... 16

5.2.1 Device status ............................................................................................................. 16

5.2.2 Modbus connection status .......................................................................................... 17

5.2.3 Finding the firmware version and serial number ........................................................... 18

5.3 Configuring and commissioning ............................................................................................. 19

5.3.1 Configuring Ethernet and IP ....................................................................................... 19

5.3.2 Configuring serial line Modbus .................................................................................... 20

5.3.3 Remote restarting the device ...................................................................................... 21

6 Decommissioning ............................................................................................................................ 23

6.1 Disconnecting ....................................................................................................................... 23

6.2 Disposal ............................................................................................................................... 23

A Specifications .................................................................................................................................. 25

A.1 Dimensions .......................................................................................................................... 27

Glossary ............................................................................................................................................. 29

Index .................................................................................................................................................. 31

Figures

2.1 Location of connectors .................................................................................................................... 3

5.1 Device management and configuration via the web browser ............................................................ 15

5.2 Overview page ............................................................................................................................. 16

5.3 Modbus status page ..................................................................................................................... 17

5.4 About page .................................................................................................................................. 18

5.5 Ethernet and IP settings page ....................................................................................................... 19

5.6 IP settings changed confirmation ................................................................................................... 20

5.7 Modbus settings page ................................................................................................................... 20

5.8 Restart device page ...................................................................................................................... 21

5.9 Restart confirmation page ............................................................................................................. 21

A.1 Enclosure dimensions ................................................................................................................... 27

iv UMSLMODGW-1006

Tables

2.1 LED diagnostic codes ..................................................................................................................... 4

3.1 Power supply connector pinout ....................................................................................................... 7

3.2 RS-485/RS-422 connector pinout .................................................................................................... 7

3.3 Modbus RS-232 connector pinout ................................................................................................... 8

3.4 Ethernet connector pinout ............................................................................................................... 9

UMSLMODGW-1006 v

Important user information

This manual explains how to install, operate and configure a SL-MOD-GW. This device may only be used for
the applications described in this document.

This manual is to be used with a SL-MOD-GW with firmware version 1.6.

These instructions are intended for use by trained specialists in electrical installation and control and automation
engineering, who are familiar with the applicable national standards and safety procedures.

Safety Precautions

ELECTRICAL HAZARD

• This equipment must be installed and serviced only by qualified personnel. Such work
should be performed only after reading this entire set of instructions.

• Before performing visual inspections, tests, or maintenance on this equipment, disconnect
all sources of electric power. Assume that all circuits are live until they have been completely
de-energized, tested, and tagged. Pay particular attention to the design of the power
system. Consider all sources of power, including the possibility of backfeeding.

• Apply appropriate personal protective equipment and follow safe electrical practices.

• Turn off all power supplying the equipment in which the SL-MOD-GW is to be installed
before installing, wiring or removing the SL-MOD-GW.

• Always use a properly rated voltage sensing device to confirm that power is off.

• The successful operation of this equipment depends upon proper handling, installation, and
operation. Neglecting fundamental installation requirements may lead to personal injury as
well as damage to electrical equipment or other property.

Failure to follow these instructions could result in death or serious injury!

vi UMSLMODGW-1006

Document conventions

Throughout this manual we use the following symbols and typefaces to make you aware of safety or other
important considerations:

Indicates a potentially hazardous situation that, if not avoided, could result
in death or serious injury.

Indicates a potentially hazardous situation that, if not avoided, could result
in damage to equipment.

Indicates information that is critical for successful application and under­standing of the product.

Provides other helpful user information that does not fall in above categories.

Provides supplemental user information.

Acronym This typeface is used to introduce acronyms or product names.

Command

This typeface is used to represent commands, prompts, input fields and file­names. In the context of programming it is used for functions, variable names,
constants or class names.

Placeholder

This typeface is used to represent replacable text. Replaceable text is a
placeholder for data you have to provide, like filenames or command line
arguments.

User input

This typeface is used to represent data entered by the user or buttons.

Screen output

Screen output or program listing

UMSLMODGW-1006 1

1.Introduction

The SL-MOD-GW is a Modbus/TCP to Modbus RTU gateway.

The gateway features one serial port which can be configured as either RS-232, RS-485 or RS-422 and an
Ethernet port. It can be mounted on a DIN rail.

Usage and configuration of the gateway is simple and conveniently performed using a web browser which
connects to the embedded web server.

Possible areas of application are:

• PLC connection

• Operator panel interfacing

• HMIs

• SCADA integration

• Remote control & monitoring

• Data logging

2 UMSLMODGW-1006

1.1 Features

The SL-MOD-GW gateway provides the following key features:

• Modbus/TCP protocol (Ethernet)

• Modbus RTU protocol (either RS-232, RS-485 or RS-422, software configurable)

• Embedded web server for easy configuration and commissioning using a web browser

• Firmware upgradeable via Ethernet

• DIN rail mountable

• 24 V DC (10-30 V) power supply

• Status LEDs for power, Ethernet link, device status and communication status

1.2 Quick start checklist

• Read this set of instructions properly and in its entirety.

• Mount the unit.

• Connect the power. Do not connect yet serial ports.

• Configure the Ethernet communications settings with a web browser (using an Ethernet crossover cable) or
with a terminal program like HyperTerminal (using a null modem cable)

• Configure the serial line communication settings.

• Configure the operational aspects of the device.

• Wire serial line interfaces.

UMSLMODGW-1006 3

2.Description

The power and RS-485/RS-422 terminals are placed on the top side of the unit. The RS-232 and Ethernet
connectors are placed on the bottom side of the unit as shown in the following illustration:

TOP VIEW

BOTTOM VIEW

FRONT VIEW

Illustration 2.1: Location of connectors

Clear front cover
RS-232 connector
Ethernet connector
DIN rail clip
Power LED
Ethernet link LED
Device status LED
Communication status LED
Power terminals
RS-485/RS-422 terminals

2.1 LED indicators

Four LEDs located at the front panel indicate the status of the device. The LEDs assist maintenance personnel
in quickly identifying wiring or communication errors.

A LED test is exercised at power-up, cycling each LED off, green and then red for approximately 0.25 seconds.
At the same time the power-on self test of the device is performed.

4 UMSLMODGW-1006

The following table outlines the indicator condition and the corresponding status after the power-on self test
has been completed:

LED Function Condition Indication

Off No power applied to the device.

Power Power

Green Power supply OK

Off No Ethernet link

Link Ethernet link

Green Ethernet link OK

Off The device has an unrecoverable fault; may need replacing.

Flashing green
1 s rate

Device operational but needs commissioning due to configu­ration missing, incomplete or incorrect.

Green The device is operating in normal condition.

Flashing red
1 s rate

Device operational but has a fault listed which requires ac­knowledgment.

Status1

Device sta­tus

Red

The device has an unrecoverable fault; may need replacing.
Flashing sequence and rate of Status2 LED indicates fault
class.

Off No Modbus/TCP connection.

Status2

Communica­tion status

Green Modbus/TCP connection established.

Table 2.1: LED diagnostic codes

UMSLMODGW-1006 5

3.Installation

3.1 Regulatory notes

1. The SL-MOD-GW is suitable for use in non-hazardous locations only.

2. The SL-MOD-GW is not authorized for use in life support devices or systems.

3. Wiring and installation must be in accordance with applicable electrical codes in accordance
with the authority having jurisdiction.

4. This is a Class A device and intended for commercial or industrial use. This equipment may
cause radio interference if used in a residential area; in this case it is the operator’s responsibility
to take appropriate measures.

5. The precondition for compliance with EMC limit values is strict adherence to the guidelines
specified in this set of instructions. This applies in particular to the area of grounding and
shielding of cables.

FCC Notice (USA only)

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.

Industry Canada Notice (Canada only)

This Class A digital apparatus complies with Canadian ICES-003.

3.2 Unpacking, handling and storage

1. Please read this set of instructions. carefully before fitting it into your system.

2. Keep all original packaging material for future storage or warranty shipments of the unit.

3. Do not exceed the specified temperatures.

3.3 Before connecting anything

1. Before installing or removing the unit or any connector, ensure that the system power and
external supplies have been turned off.

2. Check the system supply voltage with a multimeter for correct voltage range and polarity.

3. Connect the power supply cable and switch on the system power. Check if the Power LED is lit.

4. Turn off system power.

5. Connect all I/O cables.

6 UMSLMODGW-1006

6. Once you are certain that all connections have been made properly, restore the power.

3.4 DIN rail mounting and removal

The SL-MOD-GW gateway is designed to be mounted on a 35 mm DIN rail according to DIN/EN 50022. The
enclosure features a 35 mm profile at the back which snaps into the DIN rail. No tools are required for mounting.
Please observe the rules outlined in Section 3.5, “Mounting rules”.

2

1

Click

DIN rail

To mount the unit on a DIN rail, slot the top part of the
SL-MOD-GW into the upper guide of the rail and lower the enclo­sure until the bottom of the red hook clicks into place.

Slide down

2

1

To remove the SL-MOD-GW from the DIN rail, use a screw driver
as a lever by inserting it in the small slot of the red hook and push
the red hook downwards. Then remove the unit from the rail by
raising the bottom front edge of the enclosure.

3.5 Mounting rules

The enclosure provides protection against solid objects according to IP 20 / NEMA Type 1 protection rating.
When mounting the unit observe the following rules:

• No water splash and water drops

• No aggressive gas, steam or liquids

• Avoid dusty environments.

• Avoid shock or vibration

• Do not exceed the specified operational temperatures and humidity range.

• Mount inside an electrical switchboard or control cabinet.

• Make sure there is sufficient air ventilation and clearance to other devices mounted next to the

unit.

• Observe applicable local regulations like EN60204 / VDE0113.