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Momentum Sales & Marketing 170 PNT Series manual Address Switches, Module address, Two Rotary

Models: 170 PNT Series

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Introduction

Address Switches

Overview	This section describes the address switches and explains how to use them to set the
	module address.
Two Rotary
Two Rotary	Each Modbus Plus Communication Adapter has two rotary switches on the lower left
Switches	portion of the front panel. These switches are used to set the Modbus Plus node
	address.

Guidelines for Follow these guidelines when setting node addresses:

Node Addresses The node address should be assigned by your network administrator. Each node must have a unique address in the range 1... 64. Duplicate addresses are not allowed.

Addresses are assigned logically and are not dependent upon the physical

llocations of the node devices.

Starting at address 1, the lowest addresses should be assigned to programmable controllers. Communication adapters should be assigned the next addresses in direct sequence.

Addresses Must The node address is also defined in the Peer Cop Table and MSTR function blocks

Matchof the user’s application program. The address defined in the application program

must match the one set by the adapter's front panel switches.

12	870 USE 103 00 May 2001

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Momentum Sales & Marketing 170 PNT Series manual Address Switches, Module address, Two Rotary

Contents

PNT Series USE 103 00 May Table of Contents USE 103 00 May About the Book At a GlanceDocument Scope ModelsUSE 103 00 May Introduction PurposeWhat’s in this Chapter?Diagram Product OverviewOverview FunctionIntroduction Status Indicators IndicatorsActive Indicator Modbus PlusModbus Plus Channel Error Indicators Indicator Red StatusAddress Switches Module addressTwo Rotary Example of Node Address Assignment Address Switch UpperPorts and Cabling PortsCabling Introduction Assembling a Communications Adapter and I/O Base Connections Between the Adapter and I/O Base PhysicalConnections ElectricalOverview Procedure Assembling an Base and an Adapter Assembling the I/O Base and the AdapterStep Step Labeling the Assembled Module Overview What Goes on the Label? Example of a LabelDescription Disassembling an Adapter from an I/O Base Step Assembling Adapter and I/O Base Using Modbus Plus for Distributed Servicing Purpose What’s in this Chapter?Strategies for Distributed I/O Servicing Network Configuration ConfigurationLimit Types Devices onModbus Plus Network Layouts Single CableExample Example below illustrates a dual cable configuration Dual CableModbus Plus for DIO Servicing How Communication Adapters Handle Messages How Messages Are Defined in the Application How Messages are Transacted Communication Adapter Message Handling Communication Access Registers Access to Overview of Register TypesRegister Types FunctionsDiagram of Register Types All other registers can be accessed using Mstr blocks Data RegistersOutput data to field outputs Configuration Registers Module TimeoutRegister ParametersModule Ownership Registers Parameters Status Registers Ascii header blockModule Status Block Function Operating parameters Module StatusAscii Header Block Function Ascii HeaderBlock 4FC01+Byte ASCIICharacters Offset MeaningExamples of an Ascii Header Block ADM 350 00 Discrete 16-Point Input, 16-Point Output ModuleAAO 120 00 Analog 4-Channel Output Module Communication Access Registers