RFD900x Data Sheet
www.rfdesign.com.au
11
Last update 09/07/2018
The modem can also be set to send message to the entire network:
ATS11=65535 (32768 after V2.45F)
AT&W
ATZ
As messages are transmitted asynchronously, whenever a package collision happens, the radio will
automatically resend it without user intervention. This behaviour can be disabled by changing the S4
parameter to 1 as follows:
ATS4=1
AT&W
ATZ
4.1
Forwarding
A fixed forwarding node can be added to relay data from known nodes to known destination nodes.
This can be used to communicate without direct link between modems by passing data through an
intermediate node.
i.e. 3 nodes located in a straight line all spaced at the maximum transmission range from the next
(1,2,3). Data flow is node 1 to node 3 and vice versa using node 2 as a relay node.
Node 1: ATS10 = 1, ATS11 =3 // set node 1, destination 3
Node 3: ATS10 = 3, ATS11 =1 // set node 3, destination 1
Node 2: ATS10 = 2, ATS11 =don't care, AT+F0=1,3, AT+F1=3,1 // forward 1->3, and 3->1
(Node 1)
ATS11=3
// sets node 1, destination 3
AT&W
ATZ
(Node 2)
AT+F0=1,3
// sets forwarding table element 0 to forward from node1
to node3
AT+F1=3,1
// sets forwarding table element 0 to forward from node1
to node3
AT&W
ATZ
