Installation guide

46 Elements of Network Planning
890 USE 100 00
2.1.1 Preparing a Network Plan
This chapter provides a focus for planning your Modbus Plus network
requirements and layout. Planning elements include:
V Defining the network media components. These include the
network trunk cable, taps, and drop cables.
V Defining the network layout. This includes defining environmental
requirements, estimating cable run and cut lengths, and providing
access for future maintenance.
V Defining the network device setup parameters. Certain kinds of
devices require a network node address and other parameters to be
set in hardware switches or in a software configuration. Your
planning should include defining the specific setup parameters for
each networked device.
Network devices requiring the specification of setup parameters
include:
V Programmable Controllers You must define each controller’s
network node address. If you will use its Modbus to Modbus Plus
bridge mode, you must set port parameters for its Modbus port.
Setup information is supplied with each controller.
V Network Option Modules You must define each Network Option
Module’s node address and its slot position in the backplane.
V D IO Drop Adapters and TIO Modules You must define the
node address for each of these devices in your application.
V Host-Based Network Adapters You must define the Network
Adapter board’s network node address and memory window
address. You will also have to edit your host computer’s
CONFIG.SYS file. Setup information is supplied with each adapter.
V Bridge Multiplexers You must define each Bridge Multiplexer’s
network node address. You must also define the communication
parameters for each serial port that will be used in your
application. Setup information is supplied with each adapter.
V Repeaters No special setup information is required for Repeaters.
This guidebook provides installation information.