How to make end device always be in a wake up state

XBee & XBee Gateway XBee - Point-to-Point/Multi-Point
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Hello,

I need to know the sleep mode details at end devices side. How to set sleep mode parameters at end device side.I have Xbee S2C device modules.
If I shouldn’t send any data up to 1h or 2h. The end devices going to be a sleep mode.
Then If I send the data after 1h or 2h, the end devices cannot receives any data from coordinator.
I have faced one more issue at security configuration.If I configured KY (Encryption key) parameter 1234.
When I should removed and add it again devices. The KY parameter will be reset.
Then will have to configure KY parameter again.
What I should do to resolve these issues.

Thanks and Regards,

Amar Pulli.

2

The devices cannot be woken by remote messages from the coordinator, they only wake up according to their own sleep parameters or by the sleep_request pin.

The KY parameter requires a 128-bit/16-byte value, and is write only, so you will never be able to read the value after a reset.