User guide

Using Peer Cop with Modsoft

216

870 USE 101 00 V.2.2

Devices on the Network

Introduction

This section describes the three CPUs which exchange data over the sample

Modbus Plus network and the strategy used to assign node addresses.

Devices

The three CPUs and their functions are described in the following table:

Address

Strategy

In this type of architecture, assign the lowest network address (1) to the

supervisory computer. When the network initializes, the supervisor will be the first

device to get the token, and the token rotation table will be built with respect to the

supervising device.

MB+ Address CPU Function

1 Pentium supervisory computer with

an AT984 host-based PLC card

Receives specific input data

and sends global outputs

2 171 CCS 760 00 TSX Momentum

M1 Processor Adapter with

172 PNN 210 22 Modbus Plus

Option Adapter

Controls I/OBus network

and exchanges data with