Schneider Electric Modbus Plus Network Bridge Multiplexer none Manual do Utilizador descarregar pdf (Página 9)

Chapter 3 Connecting to a Controller

Configuring Modbus Plus communications l 43

Configuring Modbus Plus communications

To connect to a Modbus Plus network, your computer uses a network adapter

card such as an SA85.

Before configuring the Modbus Plus settings, make sure the card is installed

properly and has a unique Modbus Plus address assigned to it through its DIP

switches.

Ø To select and configure Modbus Plus communications:

1. From the ProWORXNxT Title Screen or the Offline Network Editor,

on the Controller menu, click Communications Setup.

2. From the Interface list on the left of the Communications Setup dialog

box, select Modbus Plus.

3. Enter your settings, then click OK:

Ÿ Adapter: sets an identifying number for an SA85 Network Card.

Up to two SA85 cards, numbered 0 or 1, can be installed. A card’s

identifying number in NxT must be the same as in the Device

command in the PC’s CONFIG.SYS file. Default is 0.

Ÿ Interrupt: Sets (in hexadecimal) the location in the PC’s memory of

a software interrupt for an SA85 Network Card. The interrupt

vector in NxT must be the same as in the Device command in the

PC’s CONFIG.SYS file. Default is 5C.

Ÿ Timeout: Specifies the length of time the PC will wait for successful

communication with a controller before displaying an error

message. Default is 2 seconds.

These parameters affect

the PC only. They must

match the parameters

set for the controller.

After you choose a com-

munication system from

the list on the left, its op-

tions appear on the right.

To select Modbus

communications,

set the Modem Type

to None.

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Schneider Electric Modbus Plus Network Bridge Multiplexer none Manual do Utilizador Página 9