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Chapter 3 Connecting to a Controller

Selecting a device on the network l 49

Ÿ A one-address Modbus “routing path”, if your Modbus

network is connected to a Modbus Plus network through a

controller in Bridge Mode or a Bridge Multiplexer. The

controller or BM85 interprets the Modbus address as a routing

path using its internal Address Map or Implicit Attach

Addressing.

To close the connection and dial a new phone number, click

Hangup.

Ÿ If you are using a dedicated line modem, NxT automatically

opens a connection. The Select Device dialog box appears.

Select a Modbus device just as you would with a direct connection.

Type:

Ÿ A Modbus address (1 to 247) for a controller on the local

network.

Ÿ A one-address Modbus “routing path”, if your Modbus

network is connected to a Modbus Plus network through a

controller in Bridge Mode or a Bridge Multiplexer. The

controller or BM85 interprets the Modbus address as a routing

path using its internal Address Map or Implicit Attach

Addressing.

To close the connection, click Hangup.

Ÿ If NxT cannot find a modem connection or if you close an old

connection in the Select Device dialog, NxT displays the Enter

Phone Number window:

To use a dedicated line modem, select Line/J478 or LineRTS as your modem

type in the Modbus Communications Setup dialog box.

v For more information, see “Setting up communications for your PC” on

page37.

When you select a device, NxT waits for

you to type a phone number and an op-

tional description. Type the phone num-

ber first. Use only numbers and these

special characters:

Ÿ Use a comma (,) to pause the di-

aling for half a second.

Ÿ Use a dash (-) to separate the

prefix and number.

Ÿ Use a space ( ) to mark the end

of the phone number.

NxT stores a list of the phone num-

bers you enter. Click to select from

it.

Type a short description after the

number so you can recognize it in

the list later. Separate the number

and description by a <space>.

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