Omron CP1H-X40D Operation Manual page 754

Cpu unit sysmac cp series

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Connections to Serial Communications Option Boards

(1) RS-422A/485 Option Board settings:

Terminating resistance ON, 4-wire.

(2) The terminating resistant setting shown above is an example for the NT631/NT631C. The setting

method varies with the PT. Refer to the manual for you PT for details.

1:N, 4-wire Connections from RS-422A/485 to RS-422A/485 Ports

Terminal block

• Communications Mode: 1:N NT Link

(1) RS-422A/485 Option Board settings:

Terminating resistance ON, 4-wire.

(2) The terminating resistant setting shown above is an example for the NT631/NT631C. The setting

method varies with the PT. Refer to the manual for you PT for details.

1:N, 2-wire Connections from RS-422A/485 to RS-422A/485 Ports

Terminal block

• Communications Mode: 1:N NT Link

(1) RS-422A/485 Option Board settings:

Terminating resistance ON, 2-wire.

Terminal block or D-sub

(See note 2.)

Terminal block or D-sub

Terminal block or D-sub connector

(See note 2.)

Terminal block or D-sub connector

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