AutomationDirect STRIDE User Manual

SGW Series

Modbus Gateway

USER MANUAL

Manual Number: SGW-USER-M

~ WARNING ~

Thank you for purchasing automation equipment from Automationdirect.com®, doing business as AutomationDirect. We want your new automation equipment to operate safely. Anyone who installs or uses this equipment should read this publication (and any other relevant publications) before installing or operating the equipment.

To minimize the risk of potential safety problems, you should follow all applicable local and national codes that regulate the installation and operation of your equipment. These codes vary from area to area and usually change with time. It is your responsibility to determine which codes should be followed, and to verify that the equipment, installation, and operation is in compliance with the latest revision of these codes.

At a minimum, you should follow all applicable sections of the National Fire Code, National Electrical Code, and the codes of the National Electrical Manufacturer’s Association (NEMA). There may be local regulatory or government offices that can also help determine which codes and standards are necessary for safe installation and operation.

Equipment damage or serious injury to personnel can result from the failure to follow all applicable codes and standards. We do not guarantee the products described in this publication are suitable for your particular application, nor do we assume any responsibility for your product design, installation, or operation.

Our products are not fault-tolerant and are not designed, manufactured or intended for use or resale as on-line control equipment in hazardous environments requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life support machines, or weapons systems, in which the failure of the product could lead directly to death, personal injury, or severe physical or environmental damage (“High Risk Activities”). AutomationDirect specifically disclaims any expressed or implied warranty of fitness for High Risk Activities.

For additional warranty and safety information, see the Terms and Conditions on our website. If you have any questions concerning the installation or operation of this equipment, or if you need additional information, please call us at 770-844-4200.

This publication is based on information that was available at the time it was published. At AutomationDirect we constantly strive to improve our products and services, so we reserve the right to make changes to the products and/or publications at any time without notice and without any obligation. This publication may also discuss features that may not be available in certain revisions of the product.

Trademarks

This publication may contain references to products produced and/or offered by other companies. The product and company names may be trademarked and are the sole property of their respective owners. AutomationDirect disclaims any proprietary interest in the marks and names of others.

No part of this manual shall be copied, reproduced, or transmitted in any way without the prior, written consent of Automationdirect.com® Incorporated. AutomationDirect retains the exclusive rights to all information included in this document.

Page W–1Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

~ ADVERTENCIA ~

Gracias por comprar equipo de automatización de Automationdirect.com®. Deseamos que su nuevo equipo de automatización opere de manera segura. Cualquier persona que instale o use este equipo debe leer esta publicación (y cualquier otra publicación pertinente) antes de instalar u operar el equipo.

Para reducir al mínimo el riesgo debido a problemas de seguridad, debe seguir todos los códigos de seguridad locales o nacionales aplicables que regulan la instalación y operación de su equipo. Estos códigos varian de área en área y usualmente cambian con el tiempo. Es su responsabilidad determinar cuales códigos deben ser seguidos y verificar que el equipo, instalación y operación estén en cumplimiento con la revisión mas reciente de estos códigos.

Como mínimo, debe seguir las secciones aplicables del Código Nacional de Incendio, Código Nacional Eléctrico, y los códigos de (NEMA) la Asociación Nacional de Fabricantes Eléctricos de USA. Puede haber oficinas de normas locales o del gobierno que pueden ayudar a determinar cuales códigos y normas son necesarios para una instalación y operación segura.

Si no se siguen todos los códigos y normas aplicables, puede resultar en daños al equipo o lesiones serias a personas. No garantizamos los productos descritos en esta publicación para ser adecuados para su aplicación en particular, ni asumimos ninguna responsabilidad por el diseño de su producto, la instalación u operación.

Nuestros productos no son tolerantes a fallas y no han sido diseñados, fabricados o intencionados para uso o reventa como equipo de control en línea en ambientes peligrosos que requieren una ejecución sin fallas, tales como operación en instalaciones nucleares, sistemas de navegación aérea, o de comunicación, control de tráfico aéreo, máquinas de soporte de vida o sistemas de armamentos en las cuales la falla del producto puede resultar directamente en muerte, heridas personales, o daños físicos o ambientales severos (“Actividades de Alto Riesgo”). Automationdirect.com específicamente rechaza cualquier garantía ya sea expresada o implicada para actividades de alto riesgo.

Para información adicional acerca de garantía e información de seguridad, vea la sección de Términos y Condiciones. Si tiene alguna pregunta sobre instalación u operación de este equipo, o si necesita información adicional, por favor llámenos al número 770-844-4200 en Estados Unidos.

Esta publicación está basada en la información disponible al momento de la publicación. En Automationdirect.com nos esforzamos constantemente para mejorar nuestros productos y servicios, así que nos reservamos el derecho de hacer cambios al producto y/o a las publicaciones en cualquier momento sin notificación y sin ninguna obligación. Esta publicación también puede discutir características que no estén disponibles en ciertas revisiones del producto.

Marcas Registradas

Esta publicación puede contener referencias a productos producidos y/u ofrecidos por otras compañías. Los nombres de las compañías y productos pueden tener marcas registradas y son propiedad única de sus respectivos dueños. Automationdirect.com, renuncia cualquier interés propietario en las marcas y nombres de otros.

Propiedad Literaria 2018–2021, Automationdirect.com® Incorporated

No se permite copiar, reproducir, o transmitir de ninguna forma ninguna parte de este manual sin previo consentimiento por escrito de Automationdirect.com® Incorporated. Automationdirect.com retiene los derechos exclusivos a toda la información incluida en este documento. Los usuarios de este equipo pueden copiar este documento solamente para instalar, configurar y mantener el equipo correspondiente. También las instituciones de enseñanza pueden usar este manual para propósitos educativos.

Page W–2 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

~ AVERTISSEMENT ~

Nous vous remercions d’avoir acheté l’équipement d’automatisation de Automationdirect.com®, en faisant des affaires comme AutomationDirect. Nous tenons à ce que votre nouvel équipement d’automatisation fonctionne en toute sécurité. Toute personne qui installe ou utilise cet équipement doit lire la présente publication (et toutes les autres publications pertinentes) avant de l’installer ou de l’utiliser.

Afin de réduire au minimum le risque d’éventuels problèmes de sécurité, vous devez respecter tous les codes locaux et nationaux applicables régissant l’installation et le fonctionnement de votre équipement. Ces codes diffèrent d’une région à l’autre et, habituellement, évoluent au fil du temps. Il vous incombe de déterminer les codes à respecter et de vous assurer que l’équipement, l’installation et le fonctionnement sont conformes aux exigences de la version la plus récente de ces codes.

Vous devez, à tout le moins, respecter toutes les sections applicables du Code national de prévention des incendies, du Code national de l’électricité et des codes de la National Electrical Manufacturer’s Association (NEMA). Des organismes de réglementation ou des services gouvernementaux locaux peuvent également vous aider à déterminer les codes ainsi que les normes à respecter pour assurer une installation et un fonctionnement sûrs.

L’omission de respecter la totalité des codes et des normes applicables peut entraîner des dommages à l’équipement ou causer de graves blessures au personnel. Nous ne garantissons pas que les produits décrits dans cette publication conviennent à votre application particulière et nous n’assumons aucune responsabilité à l’égard de la conception, de l’installation ou du fonctionnement de votre produit.

Nos produits ne sont pas insensibles aux défaillances et ne sont ni conçus ni fabriqués pour l’utilisation ou la revente en tant qu’équipement de commande en ligne dans des environnements dangereux nécessitant une sécurité absolue, par exemple, l’exploitation d’installations nucléaires, les systèmes de navigation aérienne ou de communication, le contrôle de la circulation aérienne, les équipements de survie ou les systèmes d’armes, pour lesquels la défaillance du produit peut provoquer la mort, des blessures corporelles ou de graves dommages matériels ou environnementaux («activités à risque élevé»). La société AutomationDirect nie toute garantie expresse ou implicite d’aptitude à l’emploi en ce qui a trait aux activités à risque élevé.

Pour des renseignements additionnels touchant la garantie et la sécurité, veuillez consulter la section Modalités et conditions de notre documentation. Si vous avez des questions au sujet de l’installation ou du fonctionnement de cet équipement, ou encore si vous avez besoin de renseignements supplémentaires, n’hésitez pas à nous téléphoner au 770-844-4200.

Cette publication s’appuie sur l’information qui était disponible au moment de la publication. À la société AutomationDirect, nous nous efforçons constamment d’améliorer nos produits et services. C’est pourquoi nous nous réservons le droit d’apporter des modifications aux produits ou aux publications en tout temps, sans préavis ni quelque obligation que ce soit. La présente publication peut aussi porter sur des caractéristiques susceptibles de ne pas être offertes dans certaines versions révisées du produit.

Marques de commerce

La présente publication peut contenir des références à des produits fabriqués ou offerts par d’autres entreprises. Les désignations des produits et des entreprises peuvent être des marques de commerce et appartiennent exclusivement à leurs propriétaires respectifs. AutomationDirect nie tout intérêt dans les autres marques et désignations.

Nulle partie de ce manuel ne doit être copiée, reproduite ou transmise de quelque façon que ce soit sans le consentement préalable écrit de la société Automationdirect.com® Incorporated. AutomationDirect conserve les droits exclusifs à l’égard de tous les renseignements contenus dans le présent document.

Page W–3Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Warnings

WARNING:

SuItAble foR uSe IN ClASS I, DIvISIoN 2, GRoupS A, b, C AND D HAzARDouS loCAtIoNS, oR

NoNHAzARDouS loCAtIoNS oNly.

Cet AppAReIllAGe eSt utIlISAble DANS leS emplACemeNtS De ClASSe I, DIvISIoN 2, GRoupeS A, b, C

et D, ou DANS leS emplACemeNtS NoN DANGeReux SeulemeNt.

WARNING: exploSIoN HAzARD

• Do Not DISCoNNeCt equIpmeNt WHIle tHe CIRCuIt IS lIve oR uNleSS tHe AReA IS kNoWN

• SubStItutIoN of ANy CompoNeNt mAy ImpAIR SuItAbIlIty foR ClASS I, DIvISIoN 2.

AveRtISSemeNt: RISque D’exploSIoN

• AvANt De DeCoNNeCteR l’equIpemeNt, CoupeR le CouRANt ou S’ASSuReR que

• lA SubStItutIoN De CompoSANtS peut ReNDRe Ce mAteRIel INACCeptAble pouR leS

to be fRee of IGNItAble CoNCeNtRAtIoNS.

l’emplACemeNt eSt DeSIGNe NoN DANGeReux.

emplACemeNtS De ClASSe I, DIvISIoN 2.

Page W–4 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Stride® MB Gateway

User ManUal revision History

Please include this Manual Number and the Manual Issue, both shown below, when communicating with AutomationDirect Technical Support regarding this publication.

Manual Number: SGW-USER-M Manual Issue: 1st Edition, Revision F Issue Date: April 1, 2021

Publication History

Issue Date Description of Changes

First Edition 03/28/2018 Initial Release

1st Edition, Revision A 06/29/2018 Clarified input voltage range, clarified supported web browsers.

1st Edition, Revision B 10/26/2018 Updated IP addresses in Application Examples.

1st Edition, Revision C 09/09/2019 Updated screenshots, minor clarifications.

1st Edition, Revision D 02/12/2020 Added Appendix D: Security Considerations for Control Systems Networks.

1st Edition, Revision E 08/17/2020 Clarified imported configuration filenames.

1st Edition, Revision F 04/01/2021 Corrected terminating resistor on RS-485 wiring diagrams.

Page H–iStride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

User Manual Revision History

BLANK

PAG E

Page H–ii Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Stride® ModbuS Gateway

User ManUal Table of ConTenTs

ConTenTs

hapter

User Manual Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–2 Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–3 Product Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–3 Hardware � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–3

Installation, DIN Rail Mounting� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–6 Dimensional Drawings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–7 Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–8

Operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–11

1: G

ettinG StartinG

Hardware Reset Button � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5 DIP Switches � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5 LEDs � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5

Power � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–8 Ethernet Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–9 Serial Port Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–10

Transparent Mode � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–11 Agent Mode � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

hapter

Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2–2 Mode 1: Transparent, RTU Master mode:

Mode 2: Agent, RTU Master mode:

Mode 3: Transparent, RTU Slave mode:

Mode 4: Agent, RTU Slave mode:

hapter

Initial Connection � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-2 Device Info Page� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-3 Network Settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-4 Operating Settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-5

Serial Settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-7

2: S

ummary of modbuS modeS

Modbus TCP Client/Master Device to Gateway to Modbus RTU Slave Devices � � � � � � 2–3

Modbus TCP Client/Master Device to Gateway Memory� Gateway Talks Directly to Modbus RTU Slave Devices � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2–4

Modbus RTU Master Device to Gateway to Modbus TCP Server/Slave Devices � � � � � � 2–6

Modbus RTU Master Device to Gateway Memory� Gateway Talks Directly to Modbus TCP Server/Slave Devices � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2–7

3: Web C

For Modbus RTU/ASCII Master to Modbus TCP Servers (Slaves) � � � � � � � � � � � � � � � � 3-5 For Modbus TCP Master (Client) Device to Modbus RTU/ASCII Slave Devices � � � � � � � � � 3-6

onSole ConfiGuration

. . . . . . . . . . . . . . . . . . . . . 2–1

. . . . . . . . . . . . . . . . . . . . . 3-1

TOC–1Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Table of Contents

Agent Settings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-8

Gateway Settings� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-8 Message List � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-9 Data in Gateway Memory � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-11

Import/Export � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-12

Export � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-12 Import� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3-12

Upgrade Firmware� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-13 Change Password � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-14 Load Factory Default � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-15 Reboot � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3-16

ppendix

Example 1:

Using Modbus Poll to STRIDE Modbus Gateway with BRX Slave � � � � � � � � � � � � � � A–2

Example 2:

Using Modbus Poll to STRIDE MB Gateway with CLICK Slave � � � � � � � � � � � � � � � � A–9

Example 3:

Using P3000 as Master (Client) to STRIDE Modbus Gateway with CLICK Slave� � � � � � �A–17

a: a

ppliCation exampleS

. . . . . . . . . . . . . . . . . . . . . . . . . a–1

ppendix

b: S

tride modbuS GateWay operatinG mode exampleS

. . . . . . . . b–1

Example 1:

TRANSPARENT Mode, with Modbus TCP Master (Client) Devices to Modbus RTU/ASCII Slave Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–2

Example 2:

TRANSPARENT Mode, with Modbus RTU/ASCII Master Devices to Modbus TCP Slave (Server) Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–6

Example 3:

AGENT Mode, with Modbus TCP Master (Client) Devices to Modbus RTU/ASCII Slave Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–11

Example 4:

AGENT Mode, with Modbus RTU/ASCII Master Devices to Modbus TCP Slave (Server) Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B–16

ppendix

C: m

odbuS error CodeS

. . . . . . . . . . . . . . . . . . . . . . . . . C–1

Modbus Error Codes � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � C–2

ppendix

d: S

eCurity ConSiderationS for Control SyStemS netWorkS

. . . . . d-1

Security Considerations for Control Systems Networks � � � � � � � � � � � � � � � � � � � � D-2

TOC–2 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter

GettinG Started

in t

hiS Chapter

User Manual Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–2

Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–3

Product Overview � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–3

Hardware � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–3

Hardware Reset Button � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5 DIP Switches � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5 LEDs� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–5

Installation, DIN Rail Mounting� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–6

Dimensional Drawings � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–7

Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–8

Power � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–8 Ethernet Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–9 Serial Port Wiring � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–10

Operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–11

Transparent Mode � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1–11 Agent Mode � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1–11

...

Page 1–1Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

User Manual Overview

The Purpose of this User’s Manual

Thank you for purchasing our STRIDE® Modbus Gateway. This User Manual describes the gateway and its specifications, and guides you in the installation, configuration, and methods of operation of the STRIDE®Modbus gateway.

Who Should Read This Manual

This manual contains important information for those who will install, maintain, and/or operate a STRIDE® Modbus Gateway.

Technical Support

By Telephone: 770-844-4200

(Mon.–Fri., 9:00 a.m.–6:00 p.m. E.T.)

On the Web: www.automationdirect.com

Our technical support group is glad to work with you in answering your questions. If you cannot find the solution to your particular application, or, if for any reason you need additional technical assistance, please call technical support at 770-844-4200. We are available weekdays from 9:00 a.m. to 6:00 p.m. Eastern Time.

We also encourage you to visit our web site where you can find technical and non-technical information about our products and our company. Visit us at www.automationdirect.com.

Special Symbols

NOTE: When you see the “notepad” icon in the left-hand margin, the paragraph to its immediate right will be a special note.

SECURITY NOTE: When you see the “padlock” icon in the left-hand margin, the paragraph to its immediate right will be a security-related suggestion or note.

WARNING: WheN you see the “exclAmAtIoN mARk” IcoN IN the left-hANd mARGIN, the pARAGRAph to

Its ImmedIAte RIGht WIll be A WARNING. thIs INfoRmAtIoN could pReveNt INjuRy, loss of pRopeRty, oR eveN deAth (IN extReme cAses).

Page 1–2 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Introduction

Modbus is one of the most popular communication protocols in the automation industry because it supports both traditional RS-232/422/485 devices and industrial Ethernet devices. Many industrial devices, such as PLCs, HMIs, instruments and meters use Modbus as their standard communication protocol. However, the Modbus protocols running over serial and Ethernet are so different that a communication gateway is needed as a bridge for integrating devices from these two networks. The STRIDE® Modbus Gateway provides that bridge between Modbus RTU (Serial) products and Modbus TCP (Ethernet) products.

The gateway converts bidirectionally between Modbus RTU or Modbus ASCII protocols and Modbus TCP. In addition to its compact size, the gateway features up to two 10/100 Mbps Ethernet ports and up to four RS232/422/485 serial ports.

SECURITY NOTE: When implementing any method of remote access to your equipment, you need to consider the security exposure in order to minimize the risks to your processes and your equipment. Security should always be carefully evaluated for each installation. Refer to “Appendix D: Security Considerations for Control Systems Networks” for more information.

Product Overview

Chapter 1: Getting Started

Key features include:

Industrial 1, 2, or 4 serial port, and 1 or 2 Ethernet port Modbus Gateways (Modbus RTU/ASCII <-> ModbusTCP)

Automatic read function “Agent Mode”

Ethernet ports each support up to 16 TCP devices, client or server

Serial ports each support up to 128 slave devices or 1 master device

DIP switch selectable termination resistor for RS-485 2-wire mode

High Serial Isolation Voltage (2kV)

UL61010 with Class 1 Division 2 hazardous location rating

Metal housing with wide temperature rating (−40 to +75°C)

Hardware

Part Number

SGW-MB1511-T

SGW-MB1512-T

SGW-MB1524-T

Port

Speed

Protection

Protocol Supported

Modbus TCP devices supported

Cable Type

Default IP address

STRIDE Modbus Gateway Models

Ethernet Ports

RJ45, 10/100Mbps

1 1

1 2

2 4

Serial Ports D-sub 9 pin

Ethernet Interface

Built-in 1�5 kV magnetic isolation

Modbus TCP/IP client and server

16 simultaneous Modbus TCP connections per Ethernet port

Autodetects Ethernet cable types (MDI/MDIX)

192�168�1�249 (Ethernet Port 2, SGW-MB1524-T)

Shielded RJ45

10/100 Mbps

192�168�0�249

Page 1–3Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

Port

Interface mode

Supported Baud Rates

Parity

Data Bits

Stop Bits

Flow control

Termination

ESD Protection

Isolation Protection

Serial Interface

D-sub 9-pin male port

RS-232, RS-485 and RS-422, software selectable

300, 600, 1200, 4800, 9600, 14�4k, 19�2k,

38�4k, 57�6k, 115.2k, 230�4k, 460�8k

Odd, Even or None

7 or 8 bits

1 or 2

RTS/CTS, XON/XOFF or None

DIP switch to enable/disable 120Ω matching resistor

for RS-485 2-wire

15kV for all signals

2kV

Serial Devices Supported

Protocols Supported

Note: Default values are shown in bold text.

Power Details

SGW-MB1511-T 1�8 W

Power Consumption

SGW-MB1512-T 1�8 W

SGW-MB1524-T 3�2 W

Power Input

Input Voltage

Max. Input Voltage Range

Appliance Class

Reverse Power Protection

Overload Protection

Environmental

Operating Temperature Range

Storage Temperature Range

Humidity

Maximum Altitude

Environmental Air

Protection level

Agency Approvals

EMI

EMS

Mechanical Standards

For use in Pollution Degree 2 Environment

UL61010-1, UL61010-2-201, Class I Div 2 12�12�01-

2015; CSA C22�2 No� 213-16; CAN/CSA No� 61010-1-12;

CAN/CSAC22�2 No� 61010-2-201:14, CE, FCC

IEC 61000-4-2 (ESD): ±6kV (contact), ±8kV (air)

IEC 61000-4-3 (RS): 10V/m (80MHz–2GHz)

IEC 61000-4-4 (EFT): Power Port: ±2kV; Data Port: ±1kV

IEC 61000-4-5 (Surge): PowerPort: ±1kV/DM, ±2kV/CM;

IEC 61000-4-6 (CS): 10V (150KHz–80MHz)

128 slaves or 1 master per port

Modbus RTU, Modbus ASCII

Redundant input terminals

12 / 24 / 48 VDC

9�6 – 60 VDC

Class III, SELV power source

Yes

-40 to +75 °C [-40 to +167 °F]

-40 to +85 °C [-40 to +185 °F]

5 to 95% RH (non-condensing)

2000m

Metal case, IP40

EN 55032 Class A

FCC Part 15 Subpart B Class A

Data Port: ±1kV

IEC 60068-2-6 (Vibration)

IEC 60068-2-27 (Shock)

IEC 60068-2-32 (Free Fall)

Page 1–4 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Hardware Reset Button

The Hardware Reset Button is a small recessed button located on the top of the device. Pressing the button will reset all settings to their default values.

DIP Switches

Chapter 1: Getting Started

A 120Ω termination resistor for each serial port configured for RS485 2-wire is enabled (ON) or disabled (OFF) by the corresponding DIP switch.

LEDs

The front panel provides status via the following LEDs:

PWR1 (Green)

LED ON indicates voltage is applied to Power1terminals.

PWR2 (Green)

LED ON indicates voltage is applied to Power2terminals.

RUN (Green)

Blinking Indicates the device is functioning normally. Steady on indicates power is on and device is booting up.

SPEED (RJ45 Yellow)

Chassis Ground

Power Connection

Dip Switches

Hardware Reset Button

There is one yellow SPEED LED for each Ethernet port. LED ON indicates Ethernet speed is 100Mbps. LED OFF indicates Ethernet speed is 10Mbps.

Link/Activity (RJ45 Green)

There is one green Link/Activity LED for each Ethernet port. The Link/Activity LED is ON when a valid link is established, and flashes to indicate that the gateway sees data traveling on the Ethernet network. If any network device is sending or receiving data, the Link/Activity LED will be flashing. During heavy communication loads, this indicator will be steady ON. If the LED is OFF, then a problem with the Ethernet connection has been detected.

T (Serial port Transmit, Green)

The T or trAnsmit DAtA LED flashes to indicate that the gateway is sending data through the serial port.

R (Serial port Receive, Green)

The R or receive DAtA LED flashes to indicate that the gateway is receiving data through the serial port.

Page 1–5Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

Installation, DIN Rail Mounting

NOTE: The gateway can also be panel mounted with purchase of accessory mounting bracket (part #SE2-PM1 for SGW-MB1511-T and SGW-MB1512-T, part #SE2-PM3 for SGW-MB1524-T).

These devices are open-type and are meant to be installed in an enclosure which is only accessible with the use of a tool and suitable for the environment when installed in Class 1, Division 2 Hazardous Locations. The gateway can be snapped onto a standard 35mm x 7.5 mm height DIN rail (Standard: CENELEC EN50022) and can be mounted either vertically or horizontally. Allow 20mm [0.79”] of clearance between the gateway and other equipment on the DIN rail, side-to-side and top-to-bottom.

DIN rail mounting steps:

1) Hook top back of unit over the DIN rail.

2) Push bottom back onto the DIN rail until it snaps into place.

DIN rail removal steps:

1) Push the unit down to free the bottom of the DIN rail.

2) Rotate the bottom of the unit away from the DIN rail.

3) Unhook top of unit from DIN rail.

Mounting

Removal

Page 1–6 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Dimensional Drawings

NOTE: Allow 20mm [0.79”] clearance around each gateway for proper cooling.

Chapter 1: Getting Started

Part No. Weight

SGW-MB1511-T

SGW-MB1512-T

SGW-MB1524-T

Dimensions

Width (A) Depth (B) Height (C)

mm [inches]

0.17 kg [0.36 lb]

0.32 kg [0.71 lb] 54.0 [2.13] 106 [4.17] 135.0 [5.32]

30.0 [1.18] 68.0 [2.68] 115.0 [4.53]

Page 1–7Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

Redundant DC Power

Optional Dual DC Supplies

Wiring

Power

The switch can be powered from the same DC source that is used to power your other devices. To maintain the UL listing, this must be an SELV (Safety Extra Low Voltage) power supply. A DC voltage in the range of 12 to 48VDC needs to be applied between the P1+ terminal and the P1- terminal as shown below. The chassis screw terminal should be tied to panel or chassis ground. To reduce down time resulting from power loss, the switch can be powered redundantly with a second power supply as shown below. A recommended DC power supply is AutomationDirect.com part number PSL-24-010.

Terminal block connector is Degson 2EDGK-5.08-04P-14-1000AH or equivalent.

Maximum terminal screw torque is

4.43 lb-in (0.5 N·m).

Ferrule required for stranded wire.

Wire Size Range: 24 – 12 AWG

Wire Strip Length: 7mm

befoRe peRfoRmING ANy WIRING to these sWItches mAke suRe...

• the AReA Is cuRReNtly NoNhAzARdous (especIAlly WheN WoRkING IN clAss 1, dIv 2 oR zoNe 2

hAzARdous locAtIoNs).

• poWeR Is off to the sWItch

• the scReW teRmINAl block Is uNpluGGed. thIs Is especIAlly ImpoRtANt due to the AlumINum

housING. coNNectING oR dIscoNNectING WIRes to the scReW block WheN It’s IN plAce ANd poWeR Is tuRNed oN cAN AlloW the scReWdRIveR to shoRt the poWeR to the cAse.

P1+P2-P1-P2+

–

Chassis

GND

(panel)

Page 1–8 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

Ethernet Wiring

Use data-quality (not voice-quality) twisted pair cable rated category 5e (or better) with standard RJ45 connectors. Straight-through or crossover Ethernet cable can be used for all devices the switch is connected to because all the ports are capable of auto-MDI/MDIX-crossover detection.

The RJ45 Ethernet port connector bodies on these products are metallic and connected to the Chassis GND terminal. Therefore, shielded cables may be used to provide further protection. To prevent ground loops, the cable shield should be tied to the metal connector body at one end of the cable only. Electrical isolation is also provided on the Ethernet ports for increased reliability.

Ethernet Cable Wiring

Ethernet Port

Pin MDI-X Signal MDI Signal

1 2 3 6

4, 5, 7, 8

Note: + and – indicate level polarities.

Receive Data + (RD+) Transmit Data + (TD+)

Receive Data – (RD–) Transmit Data – (TD–)

Transmit Data + (TD+) Receive Data + (RD+)

Transmit Data – (TD–) Receive Data – (RD–)

Unused Unused

Straight-thru Cable Wiring

Pin 1 Pin 1

Pin 2 Pin 2

Pin 3 Pin 3

Pin 4 Pin 4

Pin 5 Pin 5

Pin 6 Pin 6

Pin 7 Pin 7

Pin 8 Pin 8

NOTE: For reference only. Either cable wiring will work.

Cross-over Cable Wiring

Pin 1 Pin 3

Pin 2 Pin 6

Pin 3 Pin 1

Pin 4 Pin 4

Pin 5 Pin 5

Pin 6 Pin 2

Pin 7 Pin 7

Pin 8 Pin 8

Ethernet Plug & Connector Pin Positions

Page 1–9Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

RS-232

Recommended Cable - AutomationDirect L-19772 shielded cable or equivalent

RS-422/RS-485

Gateway Slave 1Slave 2 Last Slave

Recommended C

RS-485

Gateway Slave 1Slave 2 Last Slave

Recommended C

Serial Port Wiring

Serial Port Pinout

RS232 Wiring

Pin RS-232

1 2 3 4 5 6 7 8 9

Gateway Slave

CTS

RXD

TXD RTS

GND

(NC)

1 2 3 4 5

6-9

Shield

Serial Port

RS-422/485

4-wire

CTS RXD – – RXD RXD + – TXD TXD – Data –

RTS TXD + Data +

GND GND GND

– – – – – – – – – – – –

TXD RXD

GND

RS-485

2-wire

RS422/RS485 4-wire Wiring

RXDRXD+ TXDTXD+ GND

(NC)

1 2 3 4 5

6-9

able - AutomationDirect L-19773 shielded cable or equivalen

RS485 2-wire Wiring

RXDRXD+ TXDTXD+ GND

(NC)

The Gateway contains a DIP switch selectable120Ω Termination Resistor between TXD+ and TXD- for each serial port on RS-485 2-wire, when the Gateway is wired at one end of the serial network.

1 2 3 4 5

6-9

able - AutomationDirect L-19954 shielded cable or equivalen

TDTD+ RDRD+ GND

DD+ GND

TD-

TD+

RD-

RD+

GND

DD+ GND

TDTD+ RD-

RD+ GND

* User Supplied

120Ω Termination

Resistor

D-

D+ GND

* User Supplied

120Ω Termination

Resistor

Page 1–10 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Operation

Client

Slave

Server

Master

Client

Slave

Server

Master

The STRIDE® Modbus Gateway may be configured to function in Transparent Mode or Agent Mode.

Transparent Mode is a simple protocol bridge. Modbus TCP packets that arrive at the gateway Ethernet port will be translated to Modbus RTU or Modbus ASCII and transmitted out the appropriate serial port. Likewise, communications arriving at the serial port will be translated to Modbus TCP and transmitted out the Ethernet port. Data simply passes across the gateway.

Agent Mode is a valuable feature of the STRIDE® Modbus Gateway. The Agent can be configured to poll specific Modbus data addresses at the serial or Ethernet nodes and store that data into gateway shared memory. If a Modbus query comes in for one of those data points, the gateway will immediately respond with the data it has stored and thereby respond much faster than it would if it had to forward that request and wait for the response.

Transparent Mode

Chapter 1: Getting Started

Modbus query

Modbus response

Agent Mode

TCP

Gateway

Server

Gateway

Cached

data

RTU or ASCII

Modbus query

Master

Modbus response

RTU or ASCII

Modbus query

Modbus response

Modbus query

Gateway

Client

RTU or ASCII

Modbus query

Slave

Modbus response

TCP

Modbus query

Modbus response

TCP

Modbus query

Modbus response

Gateway

Cached

data

RTU or ASCII

Modbus query

Gateway responds

with cached data

Server

Modbus response

Modbus query

Master

Modbus response

Modbus query

Modbus response

Modbus query

Modbus response

Client

Modbus query

Gateway responds

with cached data

Slave

Page 1–11Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 1: Getting Started

Page 1–12 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter

Summary of modbuS modeS

in t

hiS Chapter

Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �2–2

Mode 1: Transparent, RTU Master mode: Modbus TCP Client/Master Device to Gateway to Modbus RTU Slave Devices � � � � � � � � � �2–3

Mode 2: Agent, RTU Master mode: Modbus TCP Client/Master Device to Gateway Memory� Gateway Talks Directly to Modbus RTU Slave Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �2–4

Mode 3: Transparent, RTU Slave mode: Modbus RTU Master Device to Gateway to Modbus TCP Server/Slave Devices � � � � � � � � � �2–6

Mode 4: Agent, RTU Slave mode: Modbus RTU Master Device to Gateway Memory� Gateway Talks Directly to Modbus TCP Server/ Slave Devices� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �2–7

...

Page 2–1Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 2: Summary of Modbus Modes

Introduction

As mentioned in the previous chapter, the STRIDE® Modbus Gateway may be configured to operate in four distinct modes:

• Mode 1: Transparent mode, with serial port functioning as a master device

• Mode 2: Agent mode, with serial port functioning as a master device

• Mode 3: Transparent mode, with serial port functioning as a slave device

• Mode 4: Agent mode, with serial port functioning as a slave device

Operation under each of the four modes is discussed in this chapter. For simplicity, the discussion uses RTU protocol for the serial port. The operations would be essentially identical if the serial port used ASCII protocol.

Page 2–2 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 2: Summary of Modbus Modes

Mode 1: Transparent, RTU Master mode: Modbus TCP Client/Master Device to Gateway to Modbus RTU Slave Devices

In this mode, the Current Working Mode is set to “Transparent” and the Serial Port Mode is set to “RTU Master”. These settings are displayed on the Device Information page and Operating Settings page of the web interface, respectively, as shown below.

A typical network using the gateway to connect a Modbus TCP client device to multiple Modbus RTU slave devices is illustrated below. The Modbus messages are simply translated in the gateway from Modbus TCP framing to Modbus RTU framing and then sent on to the serial network. Addressing a specific slave device is handled by the Unit Identifier (Slave ID) contained in the Modbus message.

Page 2–3Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 2: Summary of Modbus Modes

Mode 2: Agent, RTU Master mode: Modbus TCP Client/Master Device to Gateway Memory. Gateway Talks Directly to Modbus RTU Slave Devices

In this mode, the Current Working Mode is set to “Agent” and the Serial Port Mode is set to “RTU Master”. These settings are displayed on the Device Information page and Operating Settings page of the web interface, respectively, as shown below.

In Agent mode, the gateway must be assigned a Modbus ID, as shown below, since the Modbus TCP Client will query the gateway memory using that Unit ID rather than querying the slave devices directly.

Page 2–4 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 2: Summary of Modbus Modes

A list of messages must be created defining the data to be collected from various RTU slave devices connected to the serial port, and the addresses within the gateway at which to store the collected data.

In Agent mode, the Gateway sends messages created by the Slave list to the Modbus RTU slave devices. The response data from these messages are stored in local memory of the Gateway for access by the Modbus TCP Client device. The data is stored in 4 different memory blocks depending upon the Function Code used.

Coils (0x)

Data stored from

Function Code 1

The Gateway generates the serial messages from the slave list items. It stores the data from the responses in its local memory that is available to Modbus TCP devices. Modbus TCP client devices query the gateway using its Unit ID, and the gateway responds immediately with its cached data.

Inputs (1x)

Data stored from

Function Code 2

Holding Registers (4x)

Data stored from

Function Code 3

Input Registers (3x)

Data stored from

Function Code 4

NOTE: Modbus writes sent from the Modbus TCP client go across directly to the Modbus RTU slave devices as if the gateway were in Transparent mode. When the gateway is in Agent mode, addresses that devices will use to WRITE data into must be configured in the Message List even though conceptually this is a list of data that is READ from connected devices.

Page 2–5Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

Chapter 2: Summary of Modbus Modes

Mode 3: Transparent, RTU Slave mode: Modbus RTU Master Device to Gateway to Modbus TCP Server/Slave Devices

In this mode, the Current Working Mode is set to “Transparent” and the Serial Port Mode is set to “RTU Slave”. These settings are displayed on the Device Information page and Operating Settings page of the web interface, respectively, as shown below.

In RTU Slave mode, each TCP server device must be configured in the gateway with an IP address, remote port, and Unit ID (Slave ID). A unique local port is set only when the protocol is UDP.

A typical network using the gateway to connect a Modbus RTU master device to multiple Modbus TCP server devices is illustrated below. The gateway reads the Slave ID from the message of the Modbus RTU master device and does a lookup in the table to find the target IP address. It also places the Slave ID value into the Unit ID field of the Modbus TCP frame.

NOTE: Remember that only one master may be connected to each serial port.

Page 2–6 Stride® MB Gateway User Manual – 1st Edition Rev. F – April 2021

+ 64 hidden pages

AutomationDirect STRIDE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

User Manual Overview

Introduction

Product Overview

Hardware

Hardware Reset Button

DIP Switches

LEDs

Installation, DIN Rail Mounting

Dimensional Drawings

Wiring

Power

Ethernet Wiring

Serial Port Wiring

Operation

Transparent Mode

Agent Mode

Introduction

Mode 1: Transparent, RTU Master mode: Modbus TCP Client/Master Device to Gateway to Modbus RTU Slave Devices

Mode 2: Agent, RTU Master mode: Modbus TCP Client/Master Device to Gateway Memory. Gateway Talks Directly to Modbus RTU Slave Devices

Mode 3: Transparent, RTU Slave mode: Modbus RTU Master Device to Gateway to Modbus TCP Server/Slave Devices