How would I send a text command to a Zigbee device

Configuration Zigbee
1

I’ve built a distance measuring device for my garage. I’ve integrated a Zigbee board using PTVO. The operation is:
Hub sends request for measurement. Could be most any command as long as the Zigbee CC2530 can decode it.
The measurement device sends a Boolean of any sort, alternately it could send an integer.

I looked at the list of actions and wasn’t able to find a suitable action.
Thanks
John

2

This seams backwards, it should be the device that updates the hub on measurement change. the only zigbee commands that she should respond in the way that you describe would be poll or refresh assuming the device is setup to respond to those cluster commands