RS232 to 1 x RS485 / RS422, Isolated Converter

    Model: XS503

€39.00 Ex VAT
€48.75 Inc VAT

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For successful serial communication in industrial environments such as factory automation, oilfield / offshore applications or similar heavy duty harsh environments we highly recommend using a fully optically isolated converter such as the XS503.

The XS503 has full optical isolation between the RS232 interface and the RS485 / RS422 interfaces which means that no electrical voltage is actually transferred between the interfaces; data transfer is instead done by light emitting diodes (also referred to as opto-couplers). Optical isolation in combination with Transient Voltage Suppressors (TVS) effectively isolates and protects your serial device, computer and data communication from damaging surges, voltage spikes, ground loops and static electricity for up to 2500Vrms/600W and 15KV EDS protection for each data line. Furthermore the power supply is galvanic separated from the internal circuitry which gives additional protection.

This converter is made of hardend ABS plastic and has a built-in DIN mount bracket which makes it easy to install it on a standard DIN rail. Alternatively the converter can be mounted by screws by using the two screw mounting holes. Connecting the RS485 / RS422 wires is done by the included screw terminal header. RS232 is connected by a standard DB9 connector.

LED indication lights for the TX and RX signals indicates when data is transmitted or received, which is nice to have when troubleshooting.

This RS232 to RS485 / RS422 converter is build around the reliable and high performance SP202E line driver from Exar. Optical isolation is achieved with high speed 6N137 isolation opto-couplers from Fairchild Semiconductors.
A 4-feet male/female serial cable is included with each converter.

An allround solid converter ideal for most industrial applications and environments.

Overall features
  • Industrial grade strength
  • Optically isolated
  • Fail-safe bias resistors
  • Automatic Send Data Control enabled
  • Screw terminals for easy connection
  • Control LEDs for TX, RX and power
  • Compatible with Modbus RTU/ASCII, BACnet
  • Serial RS-232 cable included (M/F)

Useful optional accessories
(not included)

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

5V power supply
9V Power supply
Model number XS503
Power 9-30VDC by external supply (not included)
RS232 interface DB9 Female connector
RS485 interface Screw terminal header (2-wire Half Duplex)
Fail safe bias resistors Yes
Baud rate 300 - 115.200bps
Compatible with Modbus RTU/ASCII, BACnet
Optical Isolation 2500Vrms / 500VDC isolation
ESD protection 15KV / 600W
Installation method 35mm standard DIN rail or screw mount. Alternatively it can be piggy-backed on top of each other
Operating Temp. -40 to 85C
Comm. distance 3000M (4800bps), 2000M (9600bps)
Dimensions 117mm x 80mm x 25mm
Indication lights Power, Send and Receive
Operating Temp. -40°F to 180°F (-25°C to 70°C)
Housing ABS plastic
Compliance CE, FCC, RoHS, ISO 9001
Warranty 1 year Limited Warranty

For alternative RS232 to RS485 / RS422 solutions please see our full selection of serial converters.

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Tronicore Solutions
Møllegærdet 27
6000 Kolding, Denmark

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