Communication Settings

 

 

Before you can download the project to the Safety Logic Controller, display the variable status, or debug the project, a communication link between the PC you are working with and the connected Safety Logic Controller has to be established. This is done by defining the communi­cation parameters and then connecting the configuration PC either directly to the Safety Logic Controller (SLC) or to the higher-level stan­dard controller (LMC) which in turn communicates with the SLC.

To set the communication parameters:

1. Select the 'Online > TCPIP Communication parameters' menu item.

   A dialog for defining the communication parameters opens.

2. Depending on the connection (directly or via standard controller), the communication settings differ.

   If the communication between PC and Safety Logic Controller (SLC) is handled ...

   • via the higher-level standard controller (LMC), activate the 'SLC connected through LMC' radio button.

     

     In this case, no further settings are required. Data transmission (such as project download, handling of debug data, upload of online values, etc.) is completely performed via the LMC standard control.

     NOTE:

     After startup of the LMC standard controller, the communication connection between LMC and SLC is not possible until the Sercos bus has entered phase 2 (device verification phase).

   • directly (e.g., via LAN connection), select the 'SLC directly connected' radio button and enter the 'IP address' of the connected Safety Logic Controller.

     

     When specifying a 'Timeout' period, EcoStruxure Machine Expert - Safety monitors the elapsed response time of the SLC. If this timeout period is exceeded, the SLC communication status is set to TIMEOUT. This communication status is indicated in the 'SafePLC' control dialog.

3. Click 'OK' and connect the configuration PC either to the standard controller (LMC) or to the Safety Logic Controller (SLC), depending on the settings you made.

Verification of the serial number when connecting.

When establishing the communication connection to the SLC, the system verifies whether the PC was previously connected to the same or a different SLC. This is done by means of the SLC serial number. This helps to avoid connection to an unintended controller. See topic "Down­loading a project (step 2)" for more information.