TB20 Bus coupler, PROFIBUS-DP

TB20 Bus coupler, PROFIBUS-DP

The PROFIBUS-DP bus coupler is designed to connect a PROFIBUS bus to TB20 peripheral modules. It supports the DP-V0 and DP-V1 protocols.
It will recognize all connected peripheral modules and assign each module the corresponding inputs/outputs from the process image table.
A functioning TB20 configuration will always require a bus coupler and at least one peripheral module, but can accommodate up to 64 modules of any kind connected in series with the bus coupler. The bus coupler supports hot-swap for replacing modules during operation.

Bit packing:
Starting with firmware version 1.20, the states of 2-bit and?4-bit I/O modules can be packed together in bytes, making it possible to take full advantage of all the space in the process image table.


  • Diagnostic alarm: On | Off
  • Process alarm: On | Off
  • Pull/plug alarm: On | Off
  • Startup when expected/actual configuration differ:? On | Off ?(hot-swaping allowed: Yes | No)
  • Identifier-related diagnostics: On | Off
  • Submodule status: On | Off
  • Channel-related diagnostics: On | Off
  • Modules can be replaced during operation (hot-swapping)
  • 24 VDC power supply
  • Integrated power supply unit for powering peripheral modules (2.5 A)
  • Supplies the system’s I/O voltage (24 VDC)
  • USB device port for online diagnostics, configuring parameters, setup, and firmware updates with TB20 ToolBox
  • TB20 ToolBox simulation for setting up the I/O system without a higher-level controller in order to test the system`s operation (I/O check)
  • PROFIBUS DP slave as defined in EN 50170/IEC 61158
  • Supports all PROFIBUS baud rates
  • DP-V0 and DP-V1 support
  • Up to 64 peripheral modules
  • Up to 244 bytes of input data and 244 bytes of output data
  • Concealed "factory reset" switch for restoring the module to its factory settings
Dimensions (DxWxH)110 x 35 x 73 mm
WeightApprox. 115 g
PROFIBUS Transmission rate9.6 Kbaud ... 12 Mbaud, automatic detection
Voltage supply24 V DC, 18–30 V DC



TB20 PROFIBUS-DP Coupler600-151-1AA11


TB20-ToolBox V2 Setup Versie: V2.10.008
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