Sima S. Enterprises

RS232-CONVERTERS.COM

 McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

SERIAL AND USB CONVERTER PRODUCTS

Better Business Member

SIMA S. ENTERPRISES  

1-877-647-7434


SERIAL RS232, RS485, RS422, AND TTL CONVERTERS - USB ADAPTERS
 GENDER CHANGERS - FIBER OPTIC CONVERTERS - ETHERNET CONVERTERS

www.serialcomm.com
 SERIALCOMM AUTHORIZED DEALER

 30 Day Satisfaction Guarantee
5 Year Product Warranty
Purchase Orders Accepted
24/7 Technical Phone Support
FREE Worldwide Shipping
Same Day EXPRESS Shipping

WORRY FREE GUARANTEE!
30 Day Money Back! • 5 Year Warranty! •
Free Shipping! • Same Day Express Shipping! •
Industry Proven Highest Quality Products!

free shipping 5 year warranty rohs certified CE Certified FCC Certified ISO9001 Certified IAF Certified
With over 10,000 satisfied customers, Sima S. Enterprises offers the finest quality industry proven USB, RS-232, RS-485, RS-422, TTL, Ethernet, and Fiber Optic converters available.  All of our products are shipped the same day ordered and come with a 30 day satisfaction guarantee and a 5 year manufacturer's warranty.

FREE WORLDWIDE SHIPPING ON ALL PRODUCTS
 OPTIONAL SAME DAY EXPRESS SHIPPING UNTIL 7:30 PM EST

PRODUCT INVENTORY STATUS:   ALL PRODUCTS IN STOCK

ISOLATED RS232 TO RS485 / RS422 CONVERTER
COMMFRONT - MODEL CVT-485_422-3

Opto-Isolated RS485 / RS422 Converter

 Optically Isolated RS232 to RS485 / RS422 converter

Certifications:

 ce certified   

Sima S. Enterprises offers the finest quality serial Serial RS232 / RS485/ RS422 / Ethernet and BNC Isolators and opto-isolated converters on the market at low prices. SerialComm is the choice manufacturer of quality data communication products. Our serial isolator and opto-isolated converter products can be used for any application whether it is commercial or industrial. These converters feature optical isolation circuitry, which effectively protect your devices from transient surges, ground loop, and remote lightning. If you need protection, reliability and power efficiency at low prices we have the solution. Our isolators and opto-isolated converters come in a number of models to meet your requirements.

OPTO-ISOLATED RS232 TO
RS485 / RS422 CONVERTER
 

"Simple and Hassle-Free Operation
Completely Auto-Sensing and Self-Adjusting
 No Manual Settings Necessary At All"

Opto-isolated RS232 to RS485 / RS422 converter

Commfront Model: CVT-485_422-3
Download Specs.   CVT-485_422-3.PDF

OUR GUARANTEE

FREQUENTLY ASKED QUESTIONS

$89.95  $74.95

ORDER HERE

  

RS232 DB9 FEMALE TO RS485 / RS422
DB9 MALE OR TERMINAL BLOCK

The CVT-485_422-3 is a port powered optically isolated RS232 to RS485 / RS422 converter, which can be used to convert any standard RS-232C port into a two-wire half-duplex RS485 port or a four wire full-duplex RS422 port and vice versa. This converter features optical isolation circuitry, which effectively protect your RS232 devices from transient surges, ground loop, and remote lightning. This converter is powered from the RS232 data line; it also supports data direction auto-turnaround. No external power or flow control is required.

FEATURES

  • Port Powered: No External Power Required
  • Optical isolation effectively protects RS232 devices from transient surges, ground loop, and remote lightning
  • Optical isolation eliminates ground loop and noise problems
  • Data Direction, auto-turnaround, no flow control is necessary
  • Plug-and-Play (Device is hot-pluggable)
  • 5 Year Manufacturer’s Warranty
  • CE Compliance Certified
  • Built-in surge protection, static protection and circuit protection
  • Surface Mount Technology manufactured to ISO 9001 Standards
     

RS232 TO RS485/ RS422 SPECIFICATIONS

PART NUMBER: CVT-485_422-3
STANDARDS: EIA/TIA RS-232C Standard, RS-485 Standard and RS-422 Standard
BAUD RATES: From 300 Baud To 57,600 Baud
POWER SOURCE: Port-powered from RS232 data line
CURRENT CONSUMPTION: Less Than 10 mA
MAXIMUM DROPS: 64 Drops
CONNECTOR TYPES: RS-232 Side: DB9 Female and RS-485 / RS-422 Side: DB9 Male or Terminal Block
DISTANCE: RS-232: 16 ft (5m); RS-485 / RS-422: Up to 4000 ft (1.2 km)
WEIGHT: 1.37oz (39.0 grams) with terminal block
DIMENSIONS: 0.63” X 1.3” X 3.5” (16.0 mm X 32.0 mm X 88.0 mm)
OPERATING TEMP.: -4°F to 158°F (-20°C to 70°C)
OPERATING HUMIDITY: 5% To 90% - No Condensation
     

CONVERTER CONNECTORS PIN ASSIGNMENTS

RS232 Side (DB-9 Female Connector)
Pin Function
1 Tied Together
4
6
7 Tied Together
8
2 TX
3 RX
5 GND

RS485/RS422 Side Could be connected via DB-9 Male connector (Pin out to the right) or the included terminal block attachment.

 

  

RS485/RS422 Side (DB-9 Male
and Jumpers on Termination Board)
Pin Jumper RS485 RS422
1 J2
(default: ON)		 A+
(J2 ON)		 TX+
(J2 OFF)
2 RX+
(J2 OFF)
3 J3
(default: ON)		 B-
(J3 ON)		 TX-
(J3 OFF)
4 RX-
(J3 OFF)
5   GND GND
6 J1
(default: ON)		 (J1 ON) (J1 OFF)
7
8 J4
(default: ON)		 J4 ON To turn on 120 ohms End of Line Terminator
4

OPTO-ISOLATED RS232 TO RS485/ RS422 CONVERTERS

    

TERMINATION BOARD

  • Numbers on the left hand side indicate the pin assignment of DB-9 Male Connector (RS485 / RS422 side)
  • DO NOT connect external power to +5V pin, it is for measurement only.  The unit will function correctly only when the voltage on +5V pin is around +5V (when RS232 port is connected).
  • The unit comes with a built-in 120 ohm End of Line Terminator; use it (jumper J4 ON) only when the distance is over 660ft (200m)

CONVERTER APPLICATIONS

Figure 1: Master-Slave Multi-Drop Connections Using RS-485

 

Figure 2: Master-Slave Multi-Drop Connections Using RS-422

 
 

 
  • SECURE ONLINE ORDERING
  • PHONE ORDERING
  • CHECKS AND MONEY ORDERS
  • PURCHASE ORDERS

SAME DAY SHIPPING

SSL

SIMA S. ENTERPRISES LLC
 www.rs232-converters.com
 email:sales@simaenterprises.com
PHONE:1-877-647-7434
FAX: 1-732-749-3598

NEW JERSEY OFFICE
1298 Evans Road
Wall Township, NJ 07719

FLORIDA OFFICE
5944 Coral Ridge Road #259
Coral Springs, FL 33076
2006-2010 Copyright Protected - Sima S. Enterprises LLC - Terms & Conditions - Privacy Statement   -     Protected By Copyscape

Quality and Price Guarantee!

We are a full service company offering a high quality converter at a low price.

 

 

Quality - We offer high quality products from SerialComm.  We do not search worldwide for the cheapest possible converter and pass the savings to the customer.  We strive to provide the best converter for the lowest price.  Many customers are interfacing to expensive equipment and are looking for quality without a large price tag. Satisfaction Guarantee - We offer a 100% 30 Day Satisfaction Guarantee which most companies do not offer.  If for any reason, you are not satisfied with the product just return it.  There will be no questions asked.  Many applications are complicated and it is possible that the product does not work as you anticipated, so why should you be stuck with the product.  We will return the full value of the order minus shipping costs. We do not add restocking fees when returning a product. Technical Support - We offer phone and email technical support.  If you need help selecting a product or are having problems getting your system working, technical support could be an invaluable service.  This is a quote from our competitor’s site: “Besides our tech info webpage, which provide lots of technical help and advice on installation and use of our products, we do not provide technical support.” Why would you want to buy a product with no phone or email technical support? Sales Support - We offer phone sales and customer support.  We accept credit card orders over the phone.  We will let you know whether products are in stock and reassure you that orders will ship same day if ordered with expedited shipping.  We offer many immediate customer support functions which are not available with email support.
 

Purchase Orders - We understand that large companies usually prefer to issue purchase orders rather than using credit cards.  We accept purchase orders with NET 30 terms in most cases.  We do not accept purchase orders from companies outside the US or Canada.  Not too many companies on the internet are willing to accept purchase orders but our company does.

 

  

Manufacturer's Warranty – SerialComm offers a 5-year manufacturer's workmanship warranty.  Within a 5 year period from the time of purchase, if a rare event of a malfunction should occur; SerialComm will replace your product.  Fill out our RMA form and we will issue you a RMA number for return of your product.   We do not issue refunds after 30 days of purchase.

  

Same Day Shipping - We can deliver your product to you by the next morning if necessary via FEDEX.  We almost always have all our products in stock and make a trip to FEDEX every day at 7:30 PM to send our express shipments.  Expedited FEDEX options are offered during the checkout process for you convenience.

 

Certifications - All of SerialComm's products are CE, FCC, ISO 9001, and IAF certified and most are RoHS certified.  These certifications are an investment in our products as well as an indication that we offer quality products.

Customer Feedback
Feedback Analytics