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Serial Commands
These commands affect the serial interface between the modem and the
host. The default settings are 9600 bps and protocol mode 0.
Command
Description
sd[?|00-FF]
Set Data Rate Divisor
Data Rate
Divisor (hex)
1200 bps
=
BF
2400 bps
=
5F
9600 bps
=
17
14400 bps
=
0F
19200 bps
=
0B
28800 bps
=
07
38400 bps
=
05
57600 bps
=
03
115200 bps =
01
230400 bps =
00
sp[?|00-14]
Set Protocol Mode
00 =
point-to-point transparent mode
01 =
basic command and data only
02 =
command, data and connection notification
04 =
WIT2400 protocol mode
05 – 08
=
reserved for future use
09 =
mode 01 during transmit, transparent receive
0C =
mode 04 during transmit, transparent receive
0D – 10
=
reserved for future use
11 =
transparent transmit, mode 01 during receive
12 =
transparent transmit, mode 02 during receive
14 =
transparent transmit, mode 04 during receive
Set Data Rate Divisor
Sets the serial bit rate between the modem and the host. This command
takes effect immediately and will require adjusting the host serial rate to
agree. Nonstandard rates may be programmed by entering a data rate
divisor computed with the following formula:
DIVISOR = (230400/RATE)-1
Round all non-integer values down.
Copyright © Murata Manufacturing Co., Ltd. All Rights Reserved. 2012
HN-210D/X, HN-214D/X Rev. 2.0 01/13/17
42 of 64
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