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Industrial, Externally Powered, Isolated RS232 to 4-Wire RS485 / 4-Wire RS422 Converter

Model CON-485/422-EE4

Category: RS232 to RS422 Converters

DESCRIPTION

The CON-485/422-EE4 is an industrial grade bi-directional externally powered 2.5K isolated RS232 to RS485/RS422 converter which converts a full-duplex RS232 port to a full-duplex four-wire RS485 or full-duplex four-wire RS422 port. A built-in data direction auto-turnaround feature automatically enables the RS485/RS422 driver when data is present from the RS232 port, eliminating the need for software drivers, and making the device fully plug-and-play. The CON-485/422-EE4 is an effective solution for protecting RS232, RS485 and RS422 devices from voltage surges, lightning strikes, ground loop conditions and signal noise problems. The unit is not reliant on port power so you do not have to worry about the RS232's ability to power the converter. The CON-485/422-EE4 has a DB9 female connector on the RS232 serial port, and either a DB9 male connector, RJ45 female connector or terminal block with built-in 120 Ohm termination option. The terminal block plugs into the RS485/RS422 port, providing screw-lug wire terminations for the port. The unit is enclosed in a heavy duty steel housing for rugged applications. This converter operates from 0 to 115,200 bps.

FEATURES

  • Plug-and-Play (Device is Hot-pluggable)
  • No Drivers Needed
  • Terminal Block With Optional Built-in 120 Ohm for Maximum Flexibility
  • External UL Listed 9V to 100V-240V Power Supply is Provided With Package
  • Optional DIN Rail Mounts
  • Data Direction, Auto-turnaround, No Flow Control is Necessary
  • Built-in 600W Surge and 15KV Static Protection
  • 5 Year Manufacturer's Warranty
  • RoHS 3, CE, FCC and REACH Certified
Externally Powered RS232 to RS485/RS422
Externally Powered RS232 to RS485/RS422
PRICE: $45.95

IN STOCK

30 Day Money Back Guarantee!

5 Year Replacement Warranty!

ISO 9001:2015 QUALITY MANAGEMENT

ISO-9001:2015

Our internationally recognized ISO 9001:2015 Quality Management System (Cert. No. 743003912) with a scope of “Design, Sales, Distribution of Data Communication and IT Support Services“ was recognized and certified by TÜV Rheinland of North America known for its very demanding and stringent requirements. For more details see our Quality Policy.

COMMUNICATION
STANDARDS: EIA/TIA RS-232C Standard and 4-wire RS-485 and 4-wire RS-422 Standards
BAUD RATES: From 300 bps To 115,200 bps
CONNECTOR TYPES: RS-232 Side: DB9 Female and RS-485/RS-422 Side: either DB9 Male. RJ45 or 5-way Terminal Block
DISTANCE: RS-232 Side: 16 ft (5m) and RS-485/RS-422 Side: up to 6000 ft (1.8km)
MAX # OF CONNECTIONS: 128 Connection Drops
ELECTRICAL
POWER SOURCE: 9VDC
DC/AC POWER ADAPTER: 9VDC/1A (Input: 100-240VAC 50/60hz US Type A Plug)
OPTICAL ISOLATION: 2500V (2500Vrms 1 min, AC)
CURRENT CONSUMPTION: Less Than 100 mA
STATIC PROTECTION: 15KV Electric Static Discharge (ESD) Protection
SURGE PROTECTION: 600W Surge Protection
CONVERSION IC: Maxim MAX485 - For more information from Maxim; follow this link.
MECHANICAL
HOUSING: Heavy Duty Steel Case
DIN RAIL: Optional DIN Rail Mounts
WEIGHT: 7.1oz (200 grams)
DIMENSIONS: 4.06 X 3.25 X 0.87 in (103.0 X 82.6 X 22.0 mm)
ENVIRONMENTAL
OPERATING TEMP.: -40ºF to 185ºF (-40ºC to 85ºC)
STORAGE TEMP.: -40ºF to 185ºF (-40ºC to 85ºC)
OPERATING HUMIDITY: 5% To 95% - No Condensation
QUALITY
PRODUCT SAFETY: CE, FCC and RoHS Conformance Certified
QUALITY MANAGEMENT: Manufactured and Distributed to ISO 9001:2015 QMS
RELIABILITY: Low Failure Rate - 99+% Reliability Since Inception
WARRANTY: 5 Year Replacement Warranty

RS232 SIDE DB9 Female

Signal DCD DTR DSR RTS CTS TX RX GND
Pin # 1 4 6 7 8 2 3 5
Function TIED TIED TX RX GND

RS485/RS422 Side DB9 Male Or Terminal Block

Signal T- T+ R+ R- GND
Pin # 1 2 3 4 5
RS485 T- T+ R+ R- GND
RS422 T- T+ R+ R- GND

RJ45 Female

Signal T+ T- R+ R- GND
Pin # 1 2 3 6 7,8
RS485 T+ T- R+ R- GND
RS422 T+ T- R+ R- GND

TERMINATION GUIDE

The CON-485/422-EE4 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.

5 Position With 120 Ohm Off

5 Position With 120 Ohm On

CON-485/422-EE4 Dimensions

Using one CON-485/422-EE4 unit:

  1. Check that all connections comply with the connection diagrams.
  2. Perform a loop back test on one unit:
    1. Connect the TX+ to RX+ and TX- to RX- on the RS-485/RS-422 port.
    2. Connect the RS-232 port to the PC RS-232 port.
    3. Running a hyper terminal program on the PC, send ASCII characters to the CON-485/422-EE4 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-EE4 unit is working properly.

Using two CON-485/422-EE4 units:

  1. Check that all connections comply with the connection diagrams.
  2. Perform a loop back test on two units:
    1. Connect the two RS-485 or RS-422 ports.
    2. Connect the two RS-232 ports to two PC RS-232 ports.
    3. Running hyper terminal programs on both PCs, send ASCII characters to the CON-485/422-EE4 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-EE4 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/WIN 8/WIN 10.  DOWNLOAD SOFTWARE AND USER MANUAL

Below are some of the Industrial, Opto-Isolated, Externally Powered RS232 to RS485 / RS422 converter applications.

RS232 to 4-Wire RS485 Mode Option

FIGURE 1: EXTENDING THE RS232 DATA DISTANCE IN RS485 MODE

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

RS232 to 4-Wire RS422 Mode Option

FIGURE 3: EXTENDING THE RS232 DATA DISTANCE IN RS422 MODE

FIGURE 4: MASTER / SLAVE MULTI-DROP CONFIGURATION IN RS422 MODE

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