Advantech BB-485COSR - Express Systems & Peripherals

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BB-485COSR

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Advantech RS232/485 converter, RS232 DB25F to RS485 DB25M w/(2) channels & send data control (requires 12 VDC power supply)

ESP Price: $94.00

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Availability: Usually Ships in 24 Hours; However, Due To Shortages Contact Sales to Verify
Product Code: BB-485COSR

Description

Technical Specs

Drivers & Downloads

Model BB-485COSR, RS-232 to RS-485 converter, converts unbalanced, fullduplex RS-232 signals to balanced full-duplex (4-wire) or half-duplex (2-wire) RS-485 signals.

The RS-232 port has a female DB25S connector with pins 2 (TD input) and 3 (RD output) supported. Protective Ground (pin 1) and Signal Ground (pin 7) are also passed through. Pins 4 (RTS) and 5 (CTS) are tied together. Pins 6 (DSR), 8 (CD), and 20 (DTR) are tied together, but not passed through the converter.

The RS-485 port has a male DB25P connector with Send Data outputs on pins 2 and 14, and Receive Data inputs on pins 3 and 16, or 5 and 17. No special software is needed since the RS-485 driver is enabled by the first transition on the RS-232 side of the Transmit Data line (Pin 2). Any transmission on the TD line keeps the RS-485 driver enabled by preventing the monostable multivibrator from timing out. The transmitter is disabled approximately 1 ms after the last transmitted character. This 1 ms timeout allows continuous transmission of data at 9600 baud or higher.

A 12 VDC external power supply is required (not included, sold separately).