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Hochspannungsisolatoren

CPTT and MODBUS

[ MODBUS ] was developed by Modicon in the 70s. It is a simple way to build a Master/Slave connection to an IED (Intelligent End Device).

MODBUS has spread strongly worldwide.

MODBUS serial

MODBUS is used as a simple transmission protocol to terminal devices (RTUs oder IEDs). It has general abilites within the context of SCADA applications.
The messages are generally transmitted through serial connections.

COMPROTware:Testtool offers in this protocol:

  • Simulation of Master and Slave Station.
  • Extensive state engine to implement protocols.
  • Monitoring on the serial line (seriellen Leitung).
  • Interactive input of messages.
  • Different application oriented view formats for message traffic.


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MODBUS TCP/IP

MODBUS TCP/IP is intended for connections through the TCP internet protocol. It has the same Application Layer message format but a different Link Layer frame format as MODBUS serial.

COMPROTware:Testtool offers in this protocol:

  • Simulation of Master and Slave Station.
  • Extensive state engine to implement protocols.
  • Network Monitoring under MS Windows.
  • Interactive input of messages.
  • Different application oriented view formats for message traffic.


(click to enlarge)


(click to enlarge)


Any questions regarding CPTT? Please contact us:
e-mail cptt@realthoughts.de