RS-232, serial port used in machine to machine communication
Serial port / serial interface. The most frequently used connector is CANON DB9 (Male / Female).
NETIO 4C provides a 3-wire serial port at its green terminal block.

Basic bi-directional serial communication uses 3 wires (RxD, TxD, GND). A full RS-232 serial port has 9 wires. The interface was originally intended for connecting a modem. Other connectors, such as CANON DB25 or RJ45, are sometimes used.

Maximum cable length is about 15 to 30 meters.

In the context of NETIO products

  • NETIO 4C provides a 3-wire serial port at its green terminal block.
  • The serial port can be redirected to a direct TCP socket transmission (to convert from a TCP connection at a specified TCP port to the serial port with a defined baudrate – see the settings at the M2M API tab > Serial Console > Port)
  • Another option is to control the serial port directly with a Lua script acting as a M2M Active Client: Lua RS-232 (Serial port) – see AN18 Lua access to RS-232 serial port

 

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