© Microhard Systems Inc.
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Appendix B: Settings (S) Register Quick Reference
S108
Output Power Level
20-30dBm
*30 (1W)
S109
Hop Interval (ms)
•
0-1.5
•
1-2.0
•
2-2.5
•
33.0
•
4-4.0
•
5-5.0
•
6-7.0
•
7-10
•
8-15
•
*9-20
•
10-30
S110
Data Format (of Asynchronous serial input to modem)
•
1-*8N1
•
2-8N2
•
3-8E1
•
4-8O1
•
5-7N1
•
6-7N2
S112
Packet Max Size (bytes)
1-256
*255
S113
Packet Retransmissions
0-255
*5
S115
Repeat Interval
1-255
*3
The registers described in this Appendix are ones which are normally ‘visible’ to the user. The values stored
in these registers effect the operation of the modem. An asterisk * represents default value (if applicable).
Query format :
ATSxxx? [Enter]
where
xxx
is S register
number
detailed below
Change format :
ATSxxx
=
y [Enter]
where
xxx
is S register number and
y
is desired value
•
8-7200
•
9-4800
•
10-3600
•
11-2400
•
12-1200
•
13-600
•
14-300
•
7-7E1
•
8-7O1
•
9-7E2
•
10-7O2
•
11-40
•
12-50
•
13-60
•
14-70
•
15-80
•
16-90
•
17-100
•
18-125
•
19-150
S0
Auto Answer
0-modem will power-up in command mode
1-*modem will power-up in data mode
S2
Escape Code
-
contains ASCII value of escape character
-
*‘43’ is default value, which represents the ASCII character ‘+’
-
values greater than 127 disable the escape feature and prevent
user from returning to command mode
S101
Operating Mode
0-Master
1-Repeater
2-Slave
S102
Serial Port Baud Rate (bps)
•
0-230400
•
1-115200
•
2-57600
•
3-38400
•
4-28800
•
5-19200
•
6-14400
•
7-*9600
S103
Wireless Link Rate (bps)
0-19200 (n920S,n920BD)
1-115200 (n920/2420F, n920BD) (n920LC)
2-*172800 (n920/2420F, n920BD)
3-230400 (n920/2420F, n920BD)
6-24700 (n920BD)
8-1.2Mbps (n920/2420T)
S104
Network Address
0-4,000,000,000
*1234567890
S105
Unit Address
2-65534 (master is 1, broadcast is 65535)
S107
Static Mask
-
up to 16 characters
*default
