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RS232 To RS485/422 Converters
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Port or External Powered
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Serialcomm - Model CON-485/422-EE4



Click for More Info Sima S. Enterprises offers a diverse selection of high quality, high performance, RS232 to RS485/RS422 converter products from Serialcomm. Serialcomm is 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/RS422 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. The superior quality and reliability of our serial converters are designed for the most demanding applications whether in an industrial environment, lab, server room or your home. They are the perfect solution for the most discriminate engineer or inexperienced novice. View all of our RS232 to RS422 Converters >> CON-422-PE9 - Port-powered RS232 To RS422 Converter CON-422-PIE - Industrial Port-powered or Powered RS232 To RS422 Converter CON-485/422-PI9 - Industrial Port-powered RS232 to RS485 / RS422 Converter CON-485/422-EE9 - Industrial Powered Isolated RS232 To 2-Wire RS485/ 4-Wire RS422 CON-485/422-EE4 - Industrial Powered Isolated RS232 To 4-Wire RS485/ 4-Wire RS422 CON-422-PE25 - 25 Pin Port-powered RS232 To RS422 Converter

INDUSTRIAL
EXTERNALLY POWERED
OPTO-ISOLATED RS232 TO
4 WIRE RS485 / 4 WIRE RS422
CONVERTER

30 Day Money Back / 5 Year Replacement Guarantee

SerialComm Model: CON-485/422-EE4
Download Specs. CON-485/422-EE4.PDF

CE - FCC - RoHS
CONFORMANCE
DECLARATION

FREQUENTLY ASKED QUESTIONS

$59.95 - IN STOCK

OPTIONAL DIN RAIL MOUNTS - $3.00

DESCRIPTION

The SerialComm CON-485/422-EE4 is an industrial grade bi-directional externally powered 2.5K isolated RS-232 to RS-485/RS-422 converter which converts a full-duplex RS-232C port to a full-duplex four-wire RS-485 or full-duplex four-wire RS-422 port. A built-in data direction auto-turnaround feature automatically enables the RS-485/RS-422 driver when data is present from the RS-232 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 RS-232, RS-485 and RS-422 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 RS-232C's ability to power the converter. The CON-485/422-EE4 has a db-9 female connector on the RS-232 serial port, and either a db-9 male connector, RJ45 female connector or terminal block with built-in 120 Ohm termination option. The terminal block plugs into the RS-485/RS-422 port, providing screw-lug wire terminations for the port. The unit is enclosed in a heavy duty steel housing for rugged applications. This converter features optional DIN rail mounts.

FEATURES

Plug-and-Play (hot-pluggable)
Includes terminal block optional selectable built-in 120 Ohm termination
Operates between 0 and 115.2K baud
Supports 4-wire RS-485 and 4-wire RS-422
Data direction auto-turnaround - no flow control is necessary
External 9V powered with included AC adapter
Built-in surge and 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 4-wire RS-485 and 4-wire RS-422 Standards
BAUD RATES:	From 0 Baud To 115,200 Baud
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 4000 ft (1.2km)
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/Sec Surge Protection
CONVERSION IC:	Maxim MAX485
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)
OPERATING HUMIDITY:	5% To 95% - No Condensation
QUALITY
PRODUCT SAFETY:	CE, FCC and RoHS Conformance Certified
RELIABILITY:	Low Failure Rate - 99.9% 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	T-	T+	R+	R-	GND
RS-422	T-	T+	R+	R-	GND

DB9 FEMALE

DB9 MALE OR TERMINAL BLOCK

rs232 to rs485 / rs422 converter male

RJ45 FEMALE

SIGNAL	T+	T-	R+	R-	GND
PIN #	1	2	3	6	7,8
RS-485	T+	T-	R+	R-	GND
RS-422	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

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

TROUBLESHOOTING INSTRUCTIONS

Using one CON-485/422-EE4 unit:

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-485/RS-422 port. Connect the RS-232 port to the PC RS-232 port. 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 one CON-485/422-EE4 unit:

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-232 ports to two PC RS-232 ports. 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.

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