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Serial / RS232 / RS485 / RS422 / TTL Converter Products

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  • INDUSTRIAL AND COMMERCIAL
  • RS232 To RS485/422 Converters
  • Standard or Isolated
  • Port or External Powered
  • Industry Proven 99.9% Reliable
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INDUSTRIAL RS232 TO RS485 / RS422 CONVERTER

Serialcomm - MODEL CON-485/422-PI9

Sima S. Enterprises offers a diverse selection of high quality, high performance, RS232 to RS485/RS422 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 RS422/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/RS422 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 RS422 Converters >>


INDUSTRIAL RS232 TO
RS485 / RS422 CONVERTER

RS232 TO RS485 / RS422 CONVERTER

SerialComm Model: CON-485/422-PI9
Download Specs.   CON-485/422-PI9.PDF

FREQUENTLY ASKED QUESTIONS

$29.95 - IN STOCK

 

DESCRIPTION

The SerialComm CON-485/422-PI9 is a very high quality and very reliable industrial-grade bi-directional port-powered RS-232 to RS-485 or RS-422 converter which converts full-duplex RS-232 to a half-duplex two-wire RS-485 or full-duplex four-wire RS-422.  The converter can extend the distance of the RS232 for up to 4000 ft (1.2km).  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.  The CON-485/422-PI9 has a DB-9 female connector on the RS-232 end, and DB-9 male connector on the RS-485/RS-422 end. A separate terminal block with built-in selectable120 Ohm termination via jumper is included with the product for maximum flexibility. The terminal block plugs into the RS-485/RS-422 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
  • Flexible DB-9 cable or screw down wire installation
  • Operates from 300 to 115.2K 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 and RS-422 Standard
BAUD RATES: From 300 Baud To 115,200 Baud
CONNECTOR TYPES: RS-232 Side: DB9 Female and RS-485 Side/RS-422: either DB9 Male or 5-way Terminal Block
DISTANCE: RS-232 Side: 16 ft (5m) and RS-422/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
CURRENT CONSUMPTION: Less Than 10 mA
STATIC PROTECTION: 15KV Electric Static Discharge (ESD) Protection
SURGE PROTECTION: 600W/Sec Surge Protection
CONVERSION IC: Exar SP491E - For further information from Exar 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: 3.80 X 1.33 X 0.70 in (96.5 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 / RS422 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 T+ T- R- R+ GND
PIN # 1 2 3 4 5
RS-485        485-   485+  GND
RS-422  T+  T-    R-   R+ GND
 

DB9 FEMALE

DB9 MALE OR TERMINAL BLOCK

   

     

JUMPER CONFIGURATIONS

 

  RS-485 MODE JUMPER (L4 TO L5), (R1 TO R2) AND (R4 TO R5)  
  RS-422 MODE JUMPER (R2 TO R3)  
  120 OHM ACTIVE JUMPER (L2 TO L3)  

 

 

RS-485 - NO 120 OHM

 

RS-485 - WITH 120 OHM

 
 

RS-422 - NO 120 OHM

 

RS-422 WITH 120 OHM

 

 


APPLICATIONS

RS232 TO RS485 MODE OPTION:

FIGURE 1: EXTENDING THE RS232 DATA DISTANCE IN RS485 MODE


rs232 to rs485 / rs422 figure 2  RS485

FIGURE 2: MASTER / SLAVE MULTI-DROP CONFIGURATION IN RS485 MODE

 

RS232 TO RS422 MODE OPTION:

FIGURE 1: EXTENDING THE RS232 DATA DISTANCE IN RS422 MODE


FIGURE 2: MASTER / SLAVE MULTI-DROP CONFIGURATION IN RS422 MODE

 


TROUBLESHOOTING INSTRUCTIONS

 

Using one CON-485/422-PI9 unit:

Configure the jumpers on the terminal block for RS-422 mode. Check that all connections comply with the connection diagrams. Perform a loop back test on one unit: Connect the TX+ to RX+ and TX- to RX- on the RS-422 port. Connect the RS-232C port to the PC RS-232 port. Running a hyper terminal program on the PC, send ASCII characters to the CON-485/422-PI9 converter from one PC port, and check that the characters are received at the same PC port. This tests that the transmit and receive functions of the CON-485/422-PI9 unit is working properly.

Using two CON-485/422-PI9 units:

Configure the jumpers on the terminal block for RS-485 or RS-422 mode depending on which function you want to test. Check that all connections comply with the connection diagrams. Perform a loop back test on two units: Connect the two RS-485 or RS-422 ports. Connect the two RS-232C ports to two PC RS-232 ports. Running hyper terminal programs on both PCs, send ASCII characters to the CON-485/422-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 CON-485/422-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

 
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