TB20-C, bus coupler
PROFINET IO

The PROFINET bus coupler is designed to connect a PROFINET bus to TB20 peripheral modules. It can accommodate up to 63 modules of any kind connected in series with the bus coupler. The bus coupler supports hot-swapping for replacing modules during operation.
In addition, 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.

• Modules can be replaced during operation (hot-swapping)
• 24 V DC 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 commissioning the I/O system without a higher-level controller in order to test the system's operation (I/O check)
• Concealed "factory reset" switch for restoring the module to its factory settings
• I/O device as per PROFINET IO (IEC 61158-6-10)
• Integrated 2-port switch
• Full-duplex transmission rate of 100 Mbps
• 340 byte I/O data
• Up to 63 peripheral modules
• Conformance Class C
• Media Redundancy Protocol (MRP)
• Automatic addressing / hot-swapping (LLDP, DCP)
• Topology detection
• I&M data
• Diagnostic alarms, process alarms, pull/plug alarms
• Integration using GSDML file
• 7 LEDs, one of them bi-color