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rs
232 <=> rs 485 转换器
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fast auto tx-enable rs232 <=>
rs485 interface converter for 2-wire, half-duplex
communications, at distances up to 1.2km.
and data rates up to 115.2kbps.
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general
description and typical applications: |
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converters is a fast async bi-directional
rs232 <=> rs485 interface converter
for 3-wire, half-duplex applications, with
an automatic tx enable circuit, that will
operate at data rates up to 115.2kbps. the
unit has jumpers for bias, termination, rs232
dte/dce selection, and fixed/automatic data
rate selection.
the converters is designed
for office and/or indoor applications (non-isolated).
can be used for point to point, or multi-drop
3-wire systems. |
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physical
properties and features:
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rs232:
db9f cable.
rs485: optional 3-position
wago terminal strip.
power: none.(power from db9f
cable)
leds: none.
bias: 620 ohm pull-up and
pull-down (jumper selectable).
termination: 120 ohm (jumper
selectable).
special: automatic or fixed
data rates of 9600,n,8,1 or 19200,n,8,1 |
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specifications:
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| distance:
up to 4000 ft. (1250 meters).
operation: 3-wire half-duplex
rs485.
format: asynchronous data
with any combination of bits, parity and stop
(auto mode).
speed: up to 115.2kbps.
temperarure: 0-65c (32-150f)
ambient.
humidity: 10-90% non-condensing.
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