Description

Industrial Grade Port-Powered RS232 to RS485 Converter Adapter with TX/RX LED Lights for Industrial Long Haul Serial Communication

• 600W double lightning surge protection and 15KV static protection protect your value devices against high voltage spikes created by either static electricity or by surges in the supply voltage
• TX and RX indicators enable you to easily know the status of sending or receiving data respectively
• Passive bi-directional RS232 to RS485 converter supports reliable signal transmission over long distances: up to 4000ft over RS-485 link at a high speed
• Supports 2 wire half duplex communication, point-to-point and point-to-multi-point network (up to 32 RS-485 devices)
• The baud rate will be detected and adjusted automatically, up to 115200 bps. It’s port powered from RS-232 signal, no external power required

Product Description:

Asynchronous Half-Duplex Communication

To have a PC in charge of controlling a given process in long-haul data acquisition and control applications, this converter allows you to interface your devices using an RS232 communication link to an RS485 link and vice-versa.

Double Protection
A built-in transient voltage suppressor (TVS) enables you to get double 600W lightning surge protection against the lightning strike over the RS485 link, and 15KV static protection over the RS232 link effectively protecting your valuable devices against high voltage spikes. Simple Operation
ADDC (Automatic Data Direction Control) function can detect the incoming or outgoing data and automatically switch into the send or receive mode, then you don’t have to worry about data collision problems.

For the RS485 2 wire system, it only requires three lines (RX, TX and GND) to get an RS232 to RS485 conversion, making it great for troubleshooting the serial system, fully plug and play.

Up to 32 devices can be connected to one network to communicate over a single pair of wires (plus a ground wire), so multiple RS485 devices could be connected to one PC without a repeater.

Note – To avoid reflections on longer cables it is necessary to use appropriate termination resistors (120Ω，1/4W).

Specific
RS232 Link – 9-pin female port.
RS485 Link – 9-pin male port, 4-position terminal board.
EIA/TIA RS-232C, RS-485 specification.
Transmission Distance – 4000ft over RS485 link, 50ft over RS232 link.
Transmission Media – twisted pair (>=24 AWG ) or shielded cable.

Applications
Computer
Factory industrial automation control system
Microcontroller (MCU)
Door safe / Parking system
SCADA (supervisory control and data acquisition)

Package Content
1 x RS-232 to RS-485 Converter
1 x Terminal Board
1 x User Manual