Axis 2490 Bedienungsanleitung PDF herunterladen (Seite 28)

Technical Specifications AXIS 2490 User’s Guide

Memory

Flash Memory - 2MB.

RAM - 8MB.

Serial Connectors

Two RS-232 serial ports, 9 pin MALE D-SUB. Both support: RX, TX, RTS, CTS, DSR, DTR,

RI and CD. Supported speeds of up to 115200 bps.

MALE 9-pin DSUB (RS-232 levels) (X3 and X2)

1 I /CD Carrier Detect

2 I RXD Receive Data

3 O TXD Transmit Data

4 O /DTR Data Terminal Ready

5 - GND

6 I /DSR Data Set Ready

7 O /RTS Request To Send

8 I /CTS Clear To Send

9 I /RI Ring Indicator

1 RS-485/422 serial port on screw terminal block:

Supports speeds of up to 1843200 bps.

1 AC

2 AC

3 GND

4 GND 100 Ohm

5 RX/TX- A

6 RX/TX+ B

7 TX-

8 TX+

Delimitations for RS-485/422

RS-485 and RS-422 are similar, although there are differences in the electrical

specification. Most driver circuits are compatible with both, at least for the receiver part.

The AXIS 2490 Serial Server is primarily designed to work with RS-485 devices, although

it will probably work with most RS-422 devices as well. A terminating 100-120 Ohm

termination resistor might be needed between RX+ and RX-.

Operating Temperature

+5 to +50 ° C.

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Axis 2490 Bedienungsanleitung Seite 28