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.
Parameters
- 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
Scope of delivery: Bus coupler PROFIBUS-DP, 24 V power supply connector, bus cover element, base module
Dimensions (DxWxH): 73 x 35 x 110 mm
| 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 |
| One class 1 master connection with 240 bytes of payload data |
| Up to three class 2 master connections with 240 bytes of payload data (as a DP-V1 slave) |
| I&M data |
| 3 LEDs, one of them bi-color |
| Concealed "factory reset" switch for restoring the module to its factory settings |