Rockwell-automation 5720 DriveLogix System Uživatelský manuál stáhnout pdf (Strana 199)

Publication 20D-UM002C-EN-P - November 2003

Communicating with Devices on a Serial Link 9-5

Specifying system protocol characteristics

The available system modes are:

Data bits Specifies the number of bits per message packet.

Select 8.

Stop bits Specifies the number of stop bits to the device with which the controller is communicating.

Select 1 or 2.

Control line Specifies the mode in which the serial driver operates.

Select No Handshake, Full-Duplex, Half-Duplex with Continuous Carrier, or Half-Duplex

without Continuous Carrier.

If you are not using a modem, select No Handshake

If both modems in a point-to-point link are full-duplex, select Full-Duplex for both

controllers.

Characteristic: Description (default is shown in bold):

IMPORTANT

Half-Duplex settings do not work as with other Logix

controllers. RTS and CTS are not functional

Use this mode: For: See page:

DF1 point-to-point communication between the controller and one other DF1-protocol-compatible device.

This is the default system mode.

This mode is typically used to program the controller through its serial port.

9-8

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Rockwell-automation 5720 DriveLogix System Uživatelský manuál Strana 199