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Industrial RS485 / RS422 Repeater / Converter
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Model:
RPT-485_422-2
$69.95
In stock
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The RPT-485_422-2 is
a compact, rugged, industrial-grade,
bi-directional
RS-485 repeater / RS-422 repeater, which can be used to extend the RS-485
or RS-422 distance to up to 4000 ft (1.2km). It can also be
used to convert a two-wire RS-485 signal into a four-wire
RS-422 signal, and vice versa.
This
industrial RS485 / RS422 repeater / converter
operates within a
temperature range of -40ºF to 185ºF (-40ºC to 85ºC),
and features 600W surge protection and 15kV static
protection.
The
unit is powered from an external 5VDC regulated power supply;
it
supports data direction auto-turnaround. Therefore, it
requires no software drivers or flow control, making the
unit a highly reliable and truly plug-and-play
device
and an ideal solution for all types of
installations.
The unit is
backed by our 30-day risk-free money-back guarantee and
5-year replacement warranty.
A separate external 5VDC regulated power supply is included
in the package.
Baud
rates: 300 to 115.2K Baud.
See
also:
Isolated RS485/422 Repeater/Converter
(RPT-485_422-4)
datasheet |  FAQs |
product selection guide
 rs485/rs422 application note
 testing
info |
 declaration
of conformity
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PRODUCT PHOTOS
(INDUSTRIAL RS485 RS422 REPEATER / BOOSTER)
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FEATURES (INDUSTRIAL RS485
REPEATER / RS422 REPEATER)
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Extends RS485 or RS422's distance to
up to 4000ft (1.2km).
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
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Industrial grade with temperature range of -40ºF to 185ºF (-40ºC to 85ºC),
surge
(600W) and static protection (15kV).
- No drivers needed.
- Plug and play (hot-pluggable, data format auto-sensing &
self-adjusting).
- Built-in
surge protection, static protection and circuit
protection.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
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Safety: Strictly certified by TUV (Cert No. SG-CE-090012).
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5-year
manufacturer's warranty. |
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SPECIFICATIONS (RS485
RS422 REPEATER / EXTENDER / BOOSTER)
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Part Number: |
RPT-485_422-2 |
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Compatibility: |
EIA/TIA
RS-485 and RS-422 standard |
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Power Source: |
+5VDC (±5%)
Regulated Power Supply (not included) |
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Current
Consumption: |
Less than
30mA |
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Baud
Rates: |
300 to 115,200bps (auto-sensing and
self-adjusting) |
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Distance: |
Up
to 4000ft (1.2km) at 19,200bps |
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Connector: |
2x DB-9 Male
Connectors; 2x Termination Boards: DB-9 Female
and a 6-Way
Terminal Block |
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Surge protection: |
600W |
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Static
protection (ESD): |
Up to 15KV |
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Dimensions (H x W x D): |
0.63 x 1.3
x 4.6 in (16 x 32 x 118 mm) (with termination boards) |
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Weight: |
2.0 oz (57
g) (with termination boards) |
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Operating Temperature: |
-40ºF
to 185ºF (-40ºC to 85ºC) |
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Operating Humidity: |
Up to 90% RH (no condensation) |
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REPEATER CONNECTOR / TERMINAL
BLOCK PINOUTS
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RS485/RS422 Side |
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Pin |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
4 |
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Jumper |
J2
(default: ON) |
J3
(default: ON) |
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J1
(default: ON) |
J4
(default: ON) |
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RS485 |
A+ (J2 ON) |
B- (J3 ON) |
GND |
(J1 ON) |
Terminate/remove Jumper J4
to turn ON/OFF the 120Ω
end-of-line terminator. |
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RS422 |
(J2 OFF) |
(J3 OFF) |
GND |
(J1 OFF) |
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TX+ |
RX+ |
TX- |
RX- |
GND |
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 Note:
The RS485 / RS422 repeater (Model: RPT-485_422-2) comes with
two (2) nos. of 6-way terminal blocks for easy wire
connections. However, you may choose not to use the terminal
block provided and simply follow the above table for pin
assignments. |
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DB-9 Male (view from front) /
Terminal Block |
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JUMPER SETTINGS FOR RS485 /
RS422 MODES
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1) RS485 Mode |
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Turn ON Jumper 1, 2 & 3,
and turn
OFF Jumper 4 for RS-485 mode; |
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2) RS422 Mode |
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Turn OFF Jumper 1, 2, 3 & 4
for RS-422 mode; |
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CONNECTIONS (RS485 RS422
REPEATER / CONVERTER)
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Figure 1:
Two-wire RS-485 Repeater |
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(Note: The
maximum number of supported nodes depends on the RS-485
master) |
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Figure 2:
Four-wire RS-422 Repeater |
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(Note: The
maximum number of supported nodes depends on the RS-422
master) |
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Figure 3: Two-wire
RS-485 <=> Four-wire RS-422 |
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[+]
TROUBLESHOOTING RS485 RS422 REPEATER / CONVERTER
1) External 5VDC power input
2) Loopback Test
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Connect an RPT-485_422-2 to your PC's RS422 port and
remove Jumper 1 and terminate Jumper 2 and 3 on the
loopback-side termination board (as shown above).
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Run 232Analyzer
FREE version software on your computer.
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Select "ASCII" for both the Send and Receive data
formats. Then send command and/or string such as
"CommFront" from the 232Analyzer software. You should
receive an echo of the command/string sent
("CommFront"). By performing a simple loopback test like
this, you can test both the transmitter and receiver of
the repeater. This is very helpful when you are in doubt
about the performance of your repeater.
Screenshot: Send/receive
commands from 232Analyzer software.
232Analyzer is an advanced RS232 Serial Protocol Analyzer
software
that allows you to control, monitor and analyze serial port
(RS232 / RS485 / RS422 / TTL, etc.) activities.
Not just the data,
it also allows you to monitor or change RS-232's line
states: RTS, CTS, DTR, DSR, DCD, and RI.
The FREE version (no time
limitation) can be downloaded from
here.
TECH NOTES
RS-232: 3 easy steps to understand and control
your RS232 devices
RS-485/RS422:
Building a reliable RS485/RS422 network |
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