Schneider Electric Modbus Plus Network Bridge Multiplexer none Specifikace stáhnout pdf (Strana 24)

Section 1—Installation & Configuration Bulletin No. VVDED397044US R12/00

Network Overview December 2000

Figure 13 shows an example of two MODBUS PLUS networks. Networks

A and B are host level networks joined by a BP85 Bridge Plus. For more

information, consult the

Modicon Modbus Plus Network Planning and

Installation Guide,

890 USE 100 00

Figure 13: Network Overview

Logical Network

User-assigned addresses identify network nodes. Each node’s address

is independent of its physical site location. Addresses must be within the

range of 1 to 64, although they do not have to be sequential. Duplicate

addresses are not allowed. A device with a duplicate address will not be

allowed to join the network. If it attempts to join the network, it will display

an LED pattern for duplicate address. See Table 9 on page 37.

Up to 64 Nodes Total *

Node

Network B

Network A

Modbus or

Custom Serial Devices

DI/O

Interfaces

PLC

ATV58

Drive

Controller

ATV58

Drive

Controller

RR85

Repeater

BM85

Bridge

Multiplexer

BP85

Bridge

Plus

Local

* Maximum of 32 nodes on

each side of a repeater

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 59 60

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Schneider Electric Modbus Plus Network Bridge Multiplexer none Specifikace Strana 24