COMLI

Developed by the Alfa Laval company, COMLI (or COMmunication LInk) enables communication between control and substations.

Its physical layer uses the standard operation mode with start bit, data bits, parity and stop bit. Communication operates in  half-duplex mode, a master supports simultaneous communication with several slaves.

ISO/OSI Model

7 Application Layer COMLI Application Layer
6 Presentation Layer n/a
5 Session Layer n/a
4 Transport Layer n/a
3 Network Layer n/a
2 Link Layer n/a
1 Physical Layer RS232C (V.24)RS485

Protocol Features

  • Physical Layer

    Baud rates: 50,110,150,300,600,1200,2400,4800,9600,19,4k,38,4k

  • Link Layer

    Configuration: Point-to-Point, Multipoint (Multidrop) or radial

  • Application Layer

    Information objects:
    I/O bits, registers, alarm texts, analogues signales, RAM memory in address range 0..128 Kb
    date and time, floating point registers, time marke events, etc. ...

Applicable Products

  • ipConv
    ipConv

    Universal protocol converter for highest degree of flexibility