Indactic 23

  • The Indactic 23 protocol was developed by ABB and is used to link up RTUs and control stations in the energy índustry. Siemens, too, has developed compatible controller boards to enable connection of their own systems with ABB systems.

    The telegram frame of the protocol complies with DIN 19244, format class FT1.2 which also applies to the IEC870-5-101 protocol. In multi-point operation up to 254 substations can be connected. Indactic 23 always uses half duplex communication.

7 Application Layer Indactic 23 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 DIN 19244, FT 1.2
1 Physical Layer RS232 / V.24 (UART-Conform)
Supported Information Types
Control Direction
  • Double Command
Monitoring Direction
  • Single indication [1 Bit]
  • Single indication [1 Bit] with time tag
  • Double indication [2 bit]
  • Double indication [2 bit] with time tag
  • Event
  • Event with time tag
  • Measured value [12 bit]
  • Counter value
Protocol Features
  • Physical Layer

    RS232 / V.24 (UART-Conform), Half-Duplex

  • Link Layer

    Framing of data according to DIN 19244, FT 1.2

  • Application Layer

    Transmission of pulse commands
    Spontaneous, priority controlled transmission of Indications, Measurands and Events with or without time tag
    Time tag representation is daytime only, accuracy 1 ms
    each measurand additionally contains an error bit and an overflow bit
    General Interrogation
    Grouped interrogation of Indications, Measurands or Counters is possible
    up to 254 RTUs on 1 line

  • Address Space

    Station Address: 1..254
    Information Type: as defined in protocol description
    Group Address: 0..255

Available Protocol Stacks

Indactic 23, Master

Indactic 23, Slave

Applicable Products
  • ipConv

    Universal protocol converter for highest degree of flexibility

  • Airport Munich
    Airport Munich, Germany

    Products: ipConv
    Protocol Stacks: Indactic 23, Master Indactic 23, Slave IEC 60870-5-104, Slave