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Digimesh latency

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I'm using XBee 868LP (XB8-DMUS-002 revC).
The mesh network is designed to collect data from 8 devices in network.

I have a problem with latency in that natwork. Each of 8 devices sends 6 byte data by SPI every 800 ms to the collecting data device (API=1,unicast, mesh). If there is a direct connection between them, latency is very low, but if it uses mesh (at least one device to repeat data) the latency sometimes grows to 15 seconds. Is it normal? Can I configure the network to communicate faster?

When I disable ACKs, the network works a little faster, but still too slow. Sleep mode is set to normal (do not need to sleep). Each device (collector and senders) are set as routers.
asked Dec 16, 2013 in DigiMesh Proprietary Mesh Networking by kamil_haso New to the Community (1 point)

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