Connection Point Recognition Via Box Id - Siemens SIMATIC HMI 177 Operating Instructions Manual

Appendix
A.1 Connection point recognition
A.1.2

Connection point recognition via box ID

Box ID
You can read out the box ID of the terminal box to which the Mobile Panel 177 is connected
in the project.
Note
If you connect the Mobile Panel 177 to a terminal box of the Mobile Panel 170, the value 255
is always supplied as the box ID.
Requirements
You have set the respective box ID in each of the terminal boxes. Each terminal box must
have a unique box ID assigned to it.
Example for the evaluation of the current box ID
In order to ensure that the box ID is transferred correctly to the controller when the HMI
device is plugged in, proceed as follows when carrying out configuration in WinCC flexible:
1. Specify the connection to the PLC in the "Connections" editor. Activate the "Coordination"
2. Create three tags in the "Tag" editor.
3. Open the "Device settings" editor.
A-2
Note
The "Project ID" range pointer can be used to ensure that the HMI device is connected to
the PLC that forms the basis of the project.
The "Project ID" range pointer can be assigned to only one PLC for each project (see
"WinCC flexible Communication" user manual).
Note
A box ID cannot be set in a terminal box of the Mobile Panel 170. In this case connection
point recognition is only possible via the digital input of the controller.
area pointer to ensure that the live bit is available on the PLC side.
– Internal tag: "Internal_Box-ID"
– External tag: "Auxiliary Tag"
– External tag: "External_Box-ID"
Mobile Panel 177 (WinCC flexible)
Operating Instructions (Compact), Edition 07/2005