Omron Programmable Terminals NT631C User Manual
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SECTION 5
Connecting to the Host from the RS-422A/485 Port
This section describes the method for connecting to the host using the RS-422A/485 port of the PT.
Connecting to the Host’s RS-232C Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Type of Host and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Connectors, Cables, and Crimp Terminals . . . . . . .
Setting the Terminal Resistance for RS-422A/485 Communications
Connecting to the Host’s RS-422A/485 Port . . . . . . . . . . . . . . . . . . . . . . . . .
Host Types and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Direct Connection between RS-422A Ports at Both Units . . . . . . .
Direct Connection between RS-485 Ports at Both Units . . . . . . . . .
1:N Connection among RS-422A Ports . . . . . . . . . . . . . . . . . . . . . .
1:N Connection among RS-485 Ports . . . . . . . . . . . . . . . . . . . . . . .
Recommended Connectors, Cables and Crimp Terminals. . . . . . . .
Setting the Terminal Resistance for RS-422A/485 Communications
Handling the Shield on RS-422A/485 Cables . . . . . . . . . . . . . . . . .