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  • INDUSTRIAL AND COMMERCIAL
  • RS232 To RS485 Converters
  • Standard or Isolated
  • Port or External Powered
  • Industry Proven 99.9% Reliable
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INDUSTRIAL OPTO-ISOLATED RS232 TO RS485 CONVERTER

Serialcomm - Model ISO-485-PI9

Sima S. Enterprises offers a diverse selection of high quality, high performance, RS232 to RS485 converter products from Serialcomm the choice manufacturer of low priced data communication products without sacrificing quality and reliability. Whether you are looking for industrial or commercial grade, port or externally powered, standard or isolated converters we have the solution. Our bidirectional RS232 to RS485 converters are powered by very reliable signal processors featuring the autosensing feature and operate reliability and flawlessly without the need for flow control or software drivers. All of our RS232/RS485 converters come with optional terminal blocks for easy installation. All of our products are CE, FCC and RoHS certified by a reputable independent 3rd party testing facility and backed by our 30 day money back guarantee and 5 year warranty.

View all of our RS232 to RS485 Converters >>


INDUSTRIAL OPTO-ISOLATED RS232 TO RS485 CONVERTER

 

30 Day Money Back / 5 Year Replacement Guarantee

SerialComm Model: ISO-485-PI9
Download Specs.   ISO-485-PI9.PDF

FREQUENTLY ASKED QUESTIONS

$56.95 - IN STOCK

 

DESCRIPTION

The SerialComm ISO-485-PI9 is a very high quality and very reliable compact bi-directional industrial-grade port-powered 2.5KV optically isolated RS-232 to RS-485 converter which converts full-duplex RS-232 to a half-duplex two-wire RS-485.  The ISO-485-PI9 effectively protects connected devices from voltage surges such as lightning strikes, ground loop conditions and noise problems.  The converter can extend the distance of the RS232 for up to 4000 ft (1.2km) and is especially suited for outdoor use.  This converter is ideal for any demanding application whether indoor in a lab, server room, office, at home or outdoors within the temperature range of --40ºF to 185ºF (-40ºC to 85ºC). The converter is port-powered and derives power by amplifying the RS232 data lines requiring no external power at all. This converter features auto sensing data turnaround eliminating the need for software drivers or handshake flow control.  This device is truly plug-and-play and simple enough for the novice.  The CON-485-PI9 has a DB-9 female connector on the RS-232 end, and DB-9 male connector on the RS-485 end. Two separate terminal blocks, a rugged terminal block with no exposed jumpers and a terminal block with built-in selectable 120 Ohm termination via jumper are included with the product for maximum flexibility. The terminal blocks plug into the RS-485 end of the converter, providing screw-lug wire terminations for the port.

FEATURES

  • Plug-and-Play (hot-pluggable)
  • Includes terminal block with selectable built-in 120 termination via jumper
  • Includes rugged terminal block with no exposed jumpers
  • Flexible DB-9 cable or screw down wire installation
  • Operates from 300 to 57.6K baud
  • Port powered - no external power needed
  • Data direction auto-turnaround - no software is necessary
  • Built-in 600W/sec surge protection
  • Built-in 15KV static protection
  • 5 year manufacturer’s warranty
  • RoHS, CE and FCC certified
  • Manufactured to ISO-9001 standards
     

SPECIFICATIONS

COMMUNICATION
STANDARDS: EIA/TIA RS-232C Standard and RS-485 Standard
BAUD RATES: From 300 Baud To 57,600 Baud
CONNECTOR TYPES: RS-232 Side: DB9 Female and RS-485 Side: either DB9 Male or 3-way Terminal Block
DISTANCE: RS-232 Side: 16 ft (5m) and RS-485 Side: up to 4000 ft (1.2km)
MAX # OF CONNECTIONS: 128 Connection Drops
ELECTRICAL
POWER SOURCE: Port Powered From RS-232 Data Lines
OPTICAL ISOLATION: 2500V (2500Vrms 1 min, AC)
CURRENT CONSUMPTION: Less Than 10 mA
STATIC PROTECTION: 15KV Electric Static Discharge (ESD) Protection
SURGE PROTECTION: 600W/Sec Surge Protection
CONVERSION IC: Maxim MAX13487 - For more information from Maxim regarding their IC; follow this link.
MECHANICAL
HOUSING: Rugged ABS
WEIGHT: With Terminal Block: 1.2oz (36 grams)
Without Terminal Block: 0.8oz (24 grams)
DIMENSIONS: With Terminal Block: 3.15 X 1.33 X 0.70 in (80.0 X 33.8 X 17.8 mm)
Without Terminal Block: 2.47 X 1.33 X 0.70 in (62.8 X 33.8 X 17.8 mm)
ENVIRONMENTAL
OPERATING TEMP.: -40ºF to 185ºF (-40ºC to 85ºC)
OPERATING HUMIDITY: 5% To 95% - No Condensation
QUALITY
PRODUCT SAFETY: CE, FCC and RoHS Conformance Certified
RELIABILITY: Low Failure Rate - 99+% Reliability Since Inception
WARRANTY: 5 Year Replacement Warranty
     

PINOUTS

RS232 SIDE

RS485 SIDE

SIGNAL DCD DTR DSR RTS CTS TX RX GND
PIN # 1 4 6 7 8 2 3 5
FUNCTION TIED TIED TX RX GND
 
SIGNAL D- D+ GND
PIN # 1 2 5
FUNCTION D- D+ GND
 

DB9 FEMALE

DB9 MALE OR TERMINAL BLOCK

       

     

TERMINAL BLOCK SELECTION GUIDE

The ISO-485-PI9 comes with two terminal blocks for maximum performance and flexibility. One terminal block is a rugged terminal block which is sealed to provide protection from the elements and vibration. The other terminal block has a built-in 120 Ohm termination selectable by a jumper on the terminal block. Both terminal blocks include fastening hardware.
.
Terminal Block
With Selectable
120 Ohm Termination
RS232 to RS485 Terminal Block Rugged Sealed
Terminal Block
     

TERMINATION GUIDE

The ISO-485-PI9 terminal block has an optional built-in 120 ohm termination. 120 ohm termination is an advanced feature typically used to reduce noise and signal reflections. It is recommended to use 120 Ohm termination if you are exceeding 600 feet in distance, 19.6K baud or in a noisy environment. The terminal blocks are shipped with 120 Ohm termination off but can be turned on using the convenient jumper setting located on the left bottom of the terminal block.
.

3 Position With 120 Ohm Off

 

3  Position With 120 Ohm On

 
     

APPLICATIONS

FIGURE 1: EXTENDING RS232 DATA DISTANCE WITH 2500V ISOLATION


FIGURE 2: MASTER / SLAVE MULTI-DROP CONFIGURATION WITH 2500V ISOLATION

 


TROUBLESHOOTING INSTRUCTIONS

 

Using two ISO-485-PI9 units:

Check that all connections comply with the connection diagrams. Perform a loop back test on two units: Connect the two RS-485 ports. Connect the two RS-232 ports to two PC RS-232 ports. Running hyper terminal programs on both PCs, send ASCII characters to the ISO-485-PI9 converter from one PC port, and check that the characters are received at the 2nd PC port. Repeat the test in the opposite direction. This tests that the transmit and receive functions of both ISO-485-PI9 units are working properly.

Download FREE FULL VERSION AccessPort Advanced Serial Monitor, Simulation and Data Analysis Software Tool.  This software tool is great for testing converters.  Supports Windows 98/XP/VISTA/WIN 7.  DOWNLOAD SOFTWARE AND USER MANUAL

 

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www.rs232-converters.com
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PHONE:1-877-647-7434

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