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[CC2562P] Light Bulb Disconnected But Get No Error

Hi,

I have, a somehow, kinda small but annoying problem.

The Network is made of a Coordinator, Danfoss Thermostat, Router Ikea Tradfri, Light Bulb Dimmer E27 Ikea Tradfri and some other minor devices we don't really have to care about ( window controlling device, light bulb actuator and so on).

The system I wrote periodically send a read of some attribute, depending on the device Type, as a sort of resynch/polling mechanism. 

The problem is the following: If I send a Read of Occupied_Heating_Setpoint attribute on my thermostat and this one is disconnected I get a MAC Expired Message which is ok, but when it comes to the light bulb and I try to read the On/Off state of it, I don't get anything in return, no error nothing; Meanwhile If I send a toggle command on one my light bulbs I get a NWK_NO_ROUTE Error as expected. Can't grasp why of this behaviour.

In case of any question regarding the problem I'm here to answer.

Firmware: ZStack 3.X.0

BR,

Luca