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技術(shù)參數(shù)

No. of serial ports

4

Protocol

RS232, RS422,    RS485

Baud rate, AutroSafe
Specification

9600 baud

Communication parameters in    AutroSafe application

8 data, 1 stop bit and no parity

Short circuit protection

All outputs    protected against continuous short circuit

RS-232 mode
Input    impedance:
Input voltage    swing:
Output voltage    swing

3K? min
±30V max
± 5V min, ± 7V typical

RS-422. RS-485 modes
Differential    input threshold:
Input    impedance:
Input    current:
Differential    output voltage:
High/low states    differential
output voltage    symmetriy:

-0,2V min,    +0,2V max
12K? min
2,0V min (RL = 50?)
0,2V max

I/O header (plugs)
or
screw terminals

Two 20-position    (2x10). 025″ square pin
header on .1″centres.    Headers mate with
standard ribbon    cable (IDC) connectors. (Two
20-position    terminal blocks X1 and X2

Power Supply

+5VDC ± 10?

Current Consumption

80mA typical,    all outputs unloaded

Operating Temperature

-40° to +85°C standard

PC/104 bus

8 bit and 16    bit bus headers are installed and used (16-bit header is used for interrupt    levels only)