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RS232 to RS485 Adaptor

Code: PI-RS232/RS485

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Most industrial computer systems come with standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals. This converter lets you take advantage of RS-422 and RS-485 on systems originally equipped with RS-232. It transparently converts RS-232 signals into isolated RS-422 or RS-485 signals.
The RS-485 standard supports half-duplex communication. This means that a single pair of wires is used to both transmit and receive data. Handshaking signals such as RTS (Request To Send) are normally used to control the direction of the data flow. A special I/O circuit automatically senses the direction of the data flow and switches the transmission direction. No handshaking signals are necessary, the RS-485 control is transparent to the user. Software written for half-duplex RS-232 works without modification.
Features:
Automatic internal RS-485 bus supervision.
No external flow control signals required for RS-485.
3000 VDC isolation protection (ADAM-4510S/4520).
Transient suppression on RS-485 data lines.
Speeds up to 115.2 Kbps.
Networking up to 4000 feet.
Reserved space for termination resistors.
Power and data flow indicator for troubleshooting.
Power requirement: +10 to +30 VDC.
Mounts easily on a DIN-rail or panel.
Specifications:
  • Power requirement: Unregulated +10 ~ +30 VDC . Protected from power reversals.
  • Case: ABS with captive mounting hardware.
  • Accessories (supplied): ABS DIN-rail mounting adapter, SECC panel mounting bracket.
  • Plug-in screw terminal wiring: Accepts 0.5 to 2.5 mm2 wires.
  • Operating temperature: -10°C to 70°C.
  • Dimensions: 60 mm x 120 mm (2.36" x 4.41").
  • Transmission speed (bps): 1200, 2400, 4800, 9600, 19.2 K, 38.4 K, 57.6 K 115.2 K, RTS control and RS-422 mode (switchable).
  • Isolation voltage: 3000 VDC.
  • RS-232 interface connector: Female DB-9.
  • RS-422/RS-485 interface connector: Plug-in screw terminal.
  • Power consumption: 1.2 W.




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