Industrial Opto-Isolated RS485 / RS422 Converter / Repeater
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Model:
RPT-485_422-4
$119.95
In stock
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The
RPT-485_422-4 is a rugged,
industrial-grade, optically-isolated
RS-485/RS-422 repeater/converter, which can be used to
extend the RS-485 or RS-422 distance to up to 4000 ft
(1.2km), it can also can be used to convert a two-wire
RS-485 signal into a four-wire RS-422 signal, and vice
versa.
This
industrial opto-isolated RS485 RS422 converter / repeater
is enclosed in a heavy-duty, rustless ABS housing. It
operates within a
temperature range of -40ºF to 185ºF (-40ºC to 85ºC),
features 600W surge protection, 15kV static protection and
opto-isolation circuitry, which effectively
protects your RS-485/RS-422 devices from ground loop, noise
problems, transient surges, remote lightning and spikes. The
unit supports data rates up to 115.2K Baud, features baud
rate auto-sensing and self-adjusting, and comes with the
auto-turnaround feature for RS485 communications.
Therefore, it requires no DIP switch setting, 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.
This device
is backed by our 30-day risk-free money-back guarantee and
5-year replacement warranty.
A separate
external power supply is included in the package, and,
thanks to the professional and unique casing design, the
product can be mounted directly on a wall, panel or DIN Rail,
without a need of using any unsecured DIN-Rail or wall-mount adapters.
Baud
rates: 300 to 115.2K Baud.
datasheet |
FAQs |
product selection guide
 rs485/rs422 application note
 testing
info |
 declaration
of conformity
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PRODUCT PHOTOS
(ISOLATED RS485 TO RS422 REPEATER / CONVERTER)
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FEATURES (ISOLATED RS485 TO
RS422 CONVERTER / REPEATER)
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Industrial grade Enclosed in a rugged, rustless ABS housing.
- Direct DIN-Rail (Rack)
or Wall / Panel mounting.
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Converts 2-wire RS485 to 4-wire RS422 and vice versa.
- Extends RS485 or RS422's distance.
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
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Optical
isolation effectively protects RS-485/RS-422 devices from ground loops,
noise problems, transient surges, remote lightning and spikes.
- Supports multi-drop RS485/422 networks (up to 128 nodes of RS-485/422 devices).
- No drivers needed.
- No DIP switch or jumper settings.
- RS-485/RS-422 auto-detection, no manual setting is required.
- Plug and play (hot-pluggable, data format auto-sensing &
self-adjusting).
- Data direction auto-turnaround, no flow control is required.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
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Built-in 600W
surge protection, 15kV static protection and circuit
protection.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- Safety: Strictly certified by TUV
(Cert No.
SG-CE-100004; SG-FCC-100001).
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5-year
manufacturer's warranty. |
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SPECIFICATIONS (ISOLATED RS485
TO RS422 REPEATER / CONVERTER) |
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Part Number: |
RPT-485_422-4 |
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Compatibility: |
EIA/TIA
RS-485 and RS-422 standards |
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Power Source: |
9 to 30VDC
(External AC to DC power adapter included) |
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External AC/DC
Power Adapter: |
9VDC/500mA
(Input: 100~240VAC 50/60Hz, US type A plug) |
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Current
Consumption: |
Less than
30mA |
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Optical
Isolation: |
2500Vrms (AC,
1min) |
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Baud
Rates: |
300 to 115,200bps (auto-sensing and
self-adjusting) |
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Distance: |
RS-485/RS-422:
up to 4000ft (1.2km) at 19,200bps |
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Maximum Number
of Nodes: |
RS-485: 128
nodes; RS-422: 128 nodes |
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Connector: |
2x 10-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): |
4.9 x 3.6 x
0.9 in (125 x 73 x 33 mm) |
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Weight: |
4.5 oz (128
g) (with terminal block) |
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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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CONVERTER CONNECTOR / TERMINAL
BLOCK PINOUTS
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RS485/RS422 Side |
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Pin |
TX+/A+ |
TX-/B- |
GND2 |
RX+ |
RX- |
9-30V |
GND1 |
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RS485 |
485+ |
485- |
RS485 GND2 |
- |
- |
DC+ |
DC/RS485 GND1 |
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RS422 |
TX+ |
TX- |
RS422 GND2 |
RX+ |
RX- |
DC+ |
DC/RS422 GND1 |
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Terminal Block #1 (upper side) |
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Terminal Block #2 (lower side) |
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JUMPER SETTINGS FOR RS485 /
RS422 MODES
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No jumper setting is required
for RS485/RS422 modes (auto-detection) |
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CONNECTIONS (RS485 RS422
CONVERSION AND EXTENSION)
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Figure 1: Two-wire
RS-485 <=> Four-wire RS-422 Conversion |
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Figure 2:
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 3:
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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INSTALLATIONS |
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Figure 4: DIN-RAIL
(RACK) MOUNTING |
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Figure 5: WALL/PANEL MOUNTING |
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[+] TROUBLESHOOTING ISOLATED RS232 RS485 RS422 REPEATER /
CONVERTER
1) Make sure
the power is connected and turned on.
2) Check the connections according to the above
“CONNECTIONS” diagrams.
3) Loopback Test:
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Connect an RPT-485_422-4 to your PC's RS-485 or RS-422
port,
and then connect TX+ to RX+ and TX- to RX- on the other
side of the RPT-485_422-4.
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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 converter. This is very helpful when you are in
doubt about the performance of your converter.
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 |
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