ARF868 Radio Modems - User guide version V1.8.1
22
Page
of 26
List of the registers accessible on the ARF868 modem:
Register
Content
Default value
Comments
S200
Channel number : 11 and from 13 to 571
11
Some channels will not be available depending on the data
rate and the selected power.
The modem will return an error message
if illegal choice.
Instructs the user to configure the modem according to the
possibilities described in Appendix 1
S202
Timeout to exit command mode :
0 : no timeout, exit through ATO or AT&RST
1 : Automatic programmanle output from 1 to 65565 sec.
0
See note 4
S204
Duration of the preamble:
0: Nominal setting
X: Alternative settings for legacy X3-PRO mode
0
The choice 0 is the optimum setting. For other settings,
contact Adeunis RF
See document: Application note ARF868 Legacy X3-PRO
mode
S210
UART data rate:
0 : Autobaud
1 : 2.4 kbps
2 : 4.8 kbps
3 : 9.6 kbps
4 : 19.2 kbps
5 : 38.4 kbps
6 : 57.6 kbps
7 : 115.2kbps
8 : 1.2kbps
3
See note 1 & note 3
The other parameters of the serial interface are :
•
1 stop bit -> fixed
•
Parity -> See S212
•
Data lenght -> Voir S211
S211
UART data lenght :
0 : 7 Bits
1 : 8 Bits
1
S212
UART parity :
0: No parity
1: Parity
2: Odd parity
0
S214
Input character in command mode :
ASCII code (except 0)
0 : Disabling entry into command mode by UART.
43
The input code is 3 times the character :
•
Example : +++ if the character programmed in S214 is
the ASCII code of «+» wether 43
•
Value between 1 and 255
S215
UART interface:
0: Internal switches positions
1: RS232
2: RS485, no Term mode
3: RS485, Term mode
4: Auto
1
Unless special request, the position of the internal switch
is on modem ARF868: Auto mode (same as S215 = 4). See
note 2
S216
RTS/CTS UART flow control:
0 : Inactive
1 : Active
0
See note 3
S217
Transmission start-up Timeout :
0 : no timeout
1 à 6000 : timeout by step of 1 ms
3
If #0, transmission starts when the timeout has passed, if
the threshold of the S218 register is not reached.
See note 5
S218
Transmission start-up threshold :
From 1 to 1024 octets
30
The transmission starts when the number of bytes in FIFO
memory to reach this threshold.
See note 5
