MSA MultiGard 5000 Instruction Manual

INSTRUCTION MANUAL

MultiGard 5000® System Integration

Modbus/TCP Gateway Option

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© Mine Safety Appliances Company 2017 – All Rights Reserved

Manufactured by

MINE SAFETY APPLIANCES COMPANY

PITTSBURGH, PENNSYLVANIA 15230

3013-1048 Rev. 0

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faulty workmanship for a period of eighteen (18) months from date of shipment or one (1)
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affirmation, representation or warranty concerning the product. Seller makes no warranty
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thereof, which after examination by Seller is proven to be defective. Replacement
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any other cause of action against seller.

1.0 Introduction

This MultiGard 5000 System Integration Manual for the Modbus/TCP Gateway Option provides
the information necessary for a customer or a third party integrator to successfully connect the
system onto a larger industrial network using Modbus/TCP protocol. This interface is provided
by an Industrial Control Communications, Inc. (ICC) ETH-1000 Ethernet Gateway added into the
MultiGard 5000 system along with an Ethernet switch.

This document is intended to cover all six models of the MultiGard 5000 System that are factory
configured at MSA from two platforms. The models are 8 point, 16 point, dual 8 point, 24 point,
32 point, and dual 16 point. Keep the purchased model and its size in mind while using this
document.

The MultiGard 5000 system shall have the Compact Logix L24 processor installed as a standard
offering. The L24 processor is capable of using this Modbus/TCP gateway option.

The MultiGard 5000 System is intended to be a complete stand-alone gas detection system and
was designed to be the only point of control for its many features and user changeable
parameters. For safety reasons MSA cannot allow the customer and third parties to have
unrestricted access to the MultiGard System programming.

2.0 References

The user of this document should be familiar with Modbus addressing and compatible networks.
The following references may be used with this manual:

 [MSA] Field Wiring Diagram, Multigard System (Drawing)
[Delivered with a MultiGard System; part of the 3-ring binder.]
 [MSA] MultiGard System Instruction Manual - ASK 3103-35

[Delivered with a MultiGard System; part of the 3-ring binder.]

 [MSA] MultiGard System Factory Configuration Sheets
[Delivered with a MultiGard System; part of the 3-ring binder.]

References not supplied by MSA:

 Modbus/TCP protocol documentation and network reference materials
 Instruction Manuals – Appropriate to any third party equipment (hardware and

software)

3.0 Modbus/TCP Communication Interface

The ICC ETH-1000 Ethernet gateway is configured for the appropriate Multigard 5000 system
model at MSA during system assembly and test. This includes both the hardware and gateway
configuration.

The gateway updates itself continuously with data from the Compact Logix L24 processor using
Ethernet/IP protocol via the Ethernet switch.

Data then becomes available in Modbus/TCP protocol from the ICC ETH-1000 Ethernet gateway
via the Ethernet switch. The gateway is a multiprotocol device using its single Ethernet port
operating per the 10/100Base-T standard.

3.1 Interface Cables

The Multigard system L24 processor and the ICC ETH-1000 gateway are connected to an
unmanaged Ethernet switch using patch cables of CAT-5e or better grade. See the Multigard
5000 system drawings for details on the hardware installation.

Also use a CAT-5e or better grade patch cable to connect to the Ethernet switch to the external
network providing a Modbus/TCP connection from the Multigard system to other customer
equipment.

3.2 Ethernet Addresses

The Ethernet addresses associated with the MultiGard 5000 System and the ICC ETH-1000
gateway must be set at MSA during factory configuration.

The addresses that will be set into the processor and gateway are from customer (or responsible
third party) supplied information as follows:

 IP Address for the ICC ETH-1000 Gateway
 IP Address for the Multigard system Allen-Bradley L24 processor
 Subnet Mask common to this Ethernet network
 Default Gateway common to this Ethernet network

NOTE: To satisfy the ETH-1000 the Default Gateway address must begin with 1-223
and it cannot consist of all zeros. If there is no desire to communicate over a default
gateway, then the address provided should not physically exist on the network.

The addresses will be placed onto labels located inside the MultiGard 5000 System enclosure for
easy reference as well as in the system configuration document (part of the 3-ring binder).