You don't mention which codec your Touch10 is connected to - if you're using one of the very basic ones (like an SX10), then you may not be able to.
But if you have a capable codec, and if your blinds can be controlled by your Crestron, then Yes, you can add some code/macros to the crestron/codec to allow a button on the Touch to trigger the Crestron to operate the blinds.
Have a look at the Customization guide for what to do on the codec end - then you will need to adjust your Crestron code to connect to and monitor the xfeedback on the codec to see the Widget trigger events and perform whatever action is required to operate the blinds.
Wayne -- Please remember to mark helpful responses and to set your question as answered if appropriate.
The Cisco Codec - can probably not interact directly with BACnet. The recommende way is to have the Codec talk to the control system (RMC-4) over serial or SSH connection. And the control system in turn talk BACnet. The codec talks xApi commands. When a custom GUI button on the touch-10 is clicked, the control system will recive a command that looks like this.
*e UserInterface Extensions Event Released Signal: "LightScenario:Normal"\x0D\x0A**
When that happens the control system program will catch that signal and do the communication to BACnet. If you want feedback from BACnet to GUI in the codec - you go the oposite way and from the control system send to the codec something like this:
xcommand UserInterface Extensions Widget SetValue WidgetId: LightScenario Value: Normal