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b = 2 : 750 Hz
b = 3 : 625 Hz
b = 4 : 500 Hz
b = 5 : 312 Hz
b = 6 : 100 Hz
b = 7 : 50 Hz
b = 8 : 25 Hz
b = 9 : 10 Hz
b = 10 : 5 Hz
b = 11 : 2 Hz
b = 12 : 1 Hz
Protocol
P/80
byte = 0xab
a = 0 RS232
a = 1 TCP
a = 2 CAN
b = 0 - 16 bit LE
b = 1 - 16 bit BE
b = 2 -
Engineering Units
Permits the changing of the data protocol. The abbreviations
LE and BE in the table refer to little and big endian respectively,
denoting whether the less significant byte is sent first or last.
Pressure data are available in engineering units over both
RS232 and TCP connections, though only binary data are
available with CAN and Internal RAM.
Binary data provides pressure scaled as unsigned integers to
the operating full scale, eg for 16 bit resolution, 0 to 65535
represents -FSD to +FSD.
Stream ON
1/49
0 - RS232
1 - TCP
2 - CAN
3 - Internal RAM
4 - Internal RAM (stop
on full)
Enable the data delivery for the chosen channel. The delivery
rate is as selected in microDAQsetup, unless it is modified via
the Rate command.
Internal RAM data streaming will either log continuously,
wrapping when the end of available RAM is reached, or will stop
when the RAM is full, depending on parameter.
Stream OFF
0/48
0 - RS232
1 - TCP
2 - CAN
3 - Internal RAM
Disable the data delivery for the chosen channel.
Get Status
?/63
0 : Short
1 : With temp.
2 : Full
3 : Pressure reading
4 : Temp. readings
5 : Excitation reading
6 : Hall sensor read
7 : Firmware ID
8 : Unit serial number
9 : Scanner serial
number
Return a status packet from the microDAQ. Three main versions
are available, '
short'
, '
with temp
.' and '
full'
. Short returns status
byte information showing current operating state only, whereas
'
full'
returns microDAQ setup options and temperature data in
addition. '
With temp
.' returns the status and temperature
information intended for continuous temperature monitoring
applications. The data format is documented in a separate
section.
Additional readings poll raw values for temperature and
pressure as read from the scanner, as well as other fields as
indicated in the table
Channels
H/72
byte = 0xab
a = 0 RS232
a = 1 TCP
a = 2 CAN
a = 3 Internal RAM
b = 0 - 16
b = 1 - 32
b = 2 - 48
b = 3 - 64
Set the number of active channels returned to the user for a
data channel. Setting a value greater than the current system
maximum channels (set via setup/dtc scanner read or by the
Maximum Channels command) results in the maximum
channels value being used.
Maximum
Channels
M/77
0 - 16
1 - 32
2 - 64
Set the system maximum channels, ie the number of channels
read from the scanner. Allows the dynamic alteration of the
effective per channel sampling rate
