Manual

ManualsBrandsKEYENCE ManualsSensorsN-48/42

11

■ N-42

Connect the N-42 to external equipment through

the RS-422A communication interface as

described below.

CONNECTING THE COMMUNICATION INTERFACE

RS-422A

SG SD+ SD– RD+ RD–

* Turn ON the terminator of both the N-42 and

the external equipment (termination resistor:

100 Ω). (See p. 9.)

* The cable extension distance must be within

1.2 km.

Code Description Signal

direction

SG Ground –

SD+ Sends data to + terminal. Output

SD- Sends data to - terminal. Output

RD+ Receives data from + terminal. Input

RD- Receives data from - terminal. Input

• Connecting N-42 to general RS-422

equipment

To connect the N-42 to another N-42 unit,

perform the same connections.

SG

SD+

SD–

RD+

RD–

SG

RD+

RD–

SD+

SD–

N-42

External equipment

(N-42)

Twisted pair cable