Circutor QNA-P Series Bedienungsanleitung PDF herunterladen (Seite 10)

Page no. 9

5.1.1.- Communications cables for RJ connectors.

The use of the RJ connectors will vary according to the QNA model used.

Therefore:

QNA-412 RS232 / RS485

R1 – RS-232 Communications

R2 – RS-485 Communications

QNA-412 GSM / RS232

1 2 4

3 1165 7 8 9

21 22 24 3423 333026 3125 3527 3228 29

Lower connection terminal

R1 – RS-232 Communications

R2 – GSM aerial

RJ Connector (QNA)

Front view

1 6

4 5

Below are diagrams of the most usual connections for the QNA-412 communications

cables:

• RS-232 connection to a PC or to an external modem:

PC External Modem QNA-412

DB9 DB25 DB9 DB25

1–DSR 5–GND 7–GND 5–GND 7–GND

2–Rx 3–Tx 2–Tx 2–Rx 3–Rx

3–TX 2–Rx 3–Rx 3–Tx 2–Tx

4–CTS 7–RTS 4–RTS 8–CTS 5–CTS

5–RTS 8–CTS 5–CTS 7–RTS 4–RTS

6–GND 5–GND 7–GND 5–GND 7–GND

• RS-485:

QNA-412 RS-232/485 (DB9)

Converter

2–Tx/Rx(-) 2–Tx/Rx (-)

3–Tx/Rx(+) 1–Tx/Rx (+)

6–GND 5–GND

To communicate with a QNA-412-GSM via a mobile telephone, the RS-

232 communications cable must not be connected at any time. If it is detected

that the RS232 cable is connected, any modem operation will be cancelled.

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Circutor QNA-P Series Bedienungsanleitung Seite 10