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09101-90(I)
Jumper setting summary:
DESCRIPTION J1 POSITION
Continuous serial output 1 IN
Polled serial output 1 OUT
RMY protocol 2 IN 3 IN
NCAR protocol 2 IN 3 OUT
NMEA protocol 2 OUT 3 IN
RMYT protocol 2 OUT 3 OUT
1200 baud 4 IN 5 IN
2400 baud 4 IN 5 OUT
4800 baud 4 OUT 5 IN
9600 baud 4 OUT 5 OUT
Knots 6 IN 7 IN
Miles per hour 6 IN 7 OUT
Kilometers per hour 6 OUT 7 IN
Meters per second 6 OUT 7 OUT
DESCRIPTION J3 POSITION
Calibrated 0-5 VDC output LEFT
Serial RS-485 output RIGHT
See wiring diagram for J1 and J3 locations.
SERIAL PROTOCOLS
Details of the various operating modes are described in the
following paragraphs.
Important Note:
When the RS-485 bus is used for both sending data and
receiving commands, the connected device must be capable
of properly managing this type of half-duplex communication.
If the Wind Monitor-SE receives a command that will result in
sending a response, it will wait 25 mS for the device which
issued the command to return to receive mode. When not
sending data, the Wind Monitor-SE stays in receive mode.
RMY PROTOCOL
RMY protocol is a simple scheme suitable for use with the Young
Model 26700 Translator and many dataloggers.
RMY protocol may be used with either single Wind Monitor-SE
sensors (polled or continuous output) or multiple sensors on a
shared bus operating in polled mode.
The default output rate is once per second. Data output format is:
aa ddd sss.s<CR/LF>
“aa” is the 09101 address, (0 -15)
“ddd” is direction in degrees
“sss.s” is speed in units set by jumper J1.
In polled mode, there are two commands:
Ma! “a” is the 09101 address in hex, 0-F.
This command requests the latest reading.
ADa! “a” is the new 09101 address in hex, 0-F.
This command sets the 09101 address.
NCAR PROTOCOL
NCAR protocol uses a subset of the NCAR PAM III protocol. For
full details on the PAM III protocol, contact:
NCAR - Atmospheric Technology Division
P.O. Box 3000
Boulder, Colorado 80307-3000
Two modes of operation are available: bussed and interactive.
Bussed mode is the normal operating mode and requires a full
address/command/checksum sentence for sending commands.
Interactive mode omits the address and checksum requirements
and is intended primarily for benchtop use.
When NCAR protocol is set via jumper J1, the 09101 defaults to
bussed mode when powered up. A sequence of three ESC codes
(ASCII 27) toggles the 09101 between bussed and interactive
mode. The three ESC codes must occur within 2 seconds.
In bussed mode, the data output format is:
&aaW: sss.s dddc<EOT>
“aa” is the 09101 address in hex, 00-FF
“sss.s” is speed
“ddd” is direction in degrees
“c” is a single character pseudo-checksum
<EOT> is the ASCII end-of-transmission character (ASCII 4).
In interactive mode, the data output format is:
&aaW: sss.s ddd<CR/LF>
“aa” is the 09101 address in hex, 00-FF
“sss.s” is speed
“ddd” is direction in degrees
<CR/LF> is the carriage return/line feed pair (ASCII 13 and 10).
Wind speed units are set by jumper J1. The zero reference
direction is preset but may be reset to a new position using the ZN
command.
Commands in bussed mode use the following general format:
#aa[...]c<EOT>
“aa” is the 09101 address in hex, 00-FF
[...] is the command (see below)
“c” is a single character pseudo-checksum
<EOT> is the ASCII end-of-transmission character (ASCII 4).
Commands in interactive mode use this format:
[...]<CR>
[...] is the command
<CR> is a carriage return (ASCII 13).
When operating in continuous output mode, the 09101 will
still receive commands. However, because of the half-duplex
serial bus, commands must be issued between data output
transmissions. If commands arrive while the 09101 is transmitting,
data may be garbled by the collision. In polled mode, collisions are
unlikely since the 09101 responds only when commanded.
Response to commands varies depending on the command and
whether the 09101 is in bussed or interactive mode.
In bussed mode, commands without the “#” prefix or proper
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