Testing Profibus networking
The Profibus networking between a Profibus master and a Profibus slave can be tested with TwinCAT. Select the Bus Coupler (BK3100) as Profibus slave for the test. During the test an LED is linked to the Bus Terminal, which is connected to the Profibus slave.
Prerequisites for this step:
- TwinCAT must be in Free Run mode.
Test the link as follows:
- 1. Find the Profibus slave in the tree view on the left.
- 2. Click on the Bus Terminal for which you want to activate the LED.
- 3. Right-click on the input or output.
- 4. In the context menu click on Online Write.
- 5. Set the Bool value to „1“.
- In TwinCAT the value „1“ is shown under Online for the corresponding input or output. A signal was successfully transferred to the Profibus slave, if the LED also lights up for the Bus Terminal that is connected to the Bus Coupler. The Profibus master and Profibus slave are then successfully linked with each other.