Ref. 08-07-V6-lmn
p. 17
A
RF54
User Guide
Register description
The register value could be updated using the ATSn=m<cr> command and
displayed using ATSn?<cr> command.
At power-up, the previous transceiver configuration is restored from E2PROM
(non volatile) to RAM. The registers are located in RAM registers, any
modification is performed on RAM registers: To save current register
configurations, it is necessary to use the AT&W<cr> command (If not, the
updated parameters are lost in case of power shortage).
The registers are shared in 2 types : read only (R) or read/write (R/W)
It is mandatory that the Master modem and the Slave modem have
exactly the same registers configuration in term of : hopping table
(S200), start channel (S201), channel type (S202), serial
parameters (S210, S211, S212, S213), handshake (S216), protocol
(S220) and packet retries (S221).
It is recommended to have the same RF OUT level (S231).
Type
Register Function
Description
Default
value
Note
Radio management
R/W
S200
Hopping table
Hopping table
Default
table
4
R/W
S201
Start channel
Start channel number for hopping table
0
R/W
S202
Channel type
Channel type configuration
0 : Narrow band (10 kbps)
1 : Wide band (57.6 kbps)
1
2
When leaving factory, this product is set up in Narrow Band to optimize the range
R
S230
RSSI level
Displays the reception level of the latest
received message.
Response: S230=-xxx dBm<cr><lf> with
xxx decimal value
The RSSI values range from –115 up to –
60 dBm.
None
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