Chengdu Ebyte Electronic Technology Co.,Ltd. E90-DTU(xxxSLxx-ETH)_V2.0 User Manual
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
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DTU_2 to DTU_1 needs to add 00 05 53 (HEX) before the data;
4.2.4 Relay mode
After setting the trunking mode by the configuration mode, the trunking starts to work when
switching to the general mode.
In trunk mode, the "Module Address" is no longer in effect as an address parameter, but is forwarded
to the pair as a Network ID (NETID), and if one of the networks is received, it is forwarded to the
other network. The repeater's own network ID (NETID) is not valid.
In trunk mode, the repeater module cannot send and receive data and cannot perform low-power
operation.
Relay networking rules description:
1、Forwarding rules, relay can forward data between two network IDs (NETID) in both directions.
2. In trunking mode, the "module address" is no longer in effect as an address parameter but as a network ID
(NETID) forwarding pair.
As shown in the figure:
①One level relay
"Node 1" NETID is 08 (0x08).
"Node 2" NETID is 33 (0x21).
The module address of Relay 1 is 2081 (0x0821,ADDH:0x08,ADDL:0x21).
So the signal sent by node 1 (0x08) can be forwarded to node 2 (0x21)
Also node 1 and node 2 have the same address, so the data sent by node 1 can be received by node 2.
②Secondary Relay
The address of relay 2 is 8453 (0x2105,ADDH:0x21,ADDL:0x05).
So Relay 2 can forward data from Relay 1 to Network NETID: 05 (0x05).
Thereby node 3 and node 4 can receive node 1 data. Node 3 outputs data normally, and Node 4 has a different
address from Node 1, so it does not output data.
③Two-way relay
As configured in the figure: the data sent by node 1 can be received by nodes 2 and 3, and the data sent by
nodes 2 and 3 can be received by node 1.
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