Wilmers blueberry COMPACT, Manual

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Data Logger blueberry COMPACT Wilmers Messtechnik GmbH
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Data Logger blueberry COMPACT Wilmers Messtechnik GmbH
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nent (sensor,
INPUT Module
or data
logger) at a time to transmit data.
All other components work in re-
ceiver mode. The poll pause allows
to switch from transmitter to re-
ceiver mode.
Timeout
defines the maximum time the
blueberry COMPACT
waits for the
answer to a poll command. If the
polled component does not answer
the poll command will be repeated
once or several times depending on
the value set for
Retry
. If no data
was received the measured values
are stored as
nan
(„not a number“).
Poll Command
Enter the poll command into the
field
Poll Command
and click
OK
to
save the setting into the data log-
ger.
The following poll commands provide measured val-
ues from the
blueberry COMPACT
data logger itself:
Command:
#100 f1f2f3f4f5f6f7f8f9f10\r
or
#100 F\r
Results:
Index Value Unit
1 Frequency of
DIN1
Hz
2 Frequency of
DIN2
Hz
3 Frequency of
DIN3
Hz
4 Frequency of DIN4 Hz
5 Frequency of
DIN5
Hz
6 Frequency of
DIN6
Hz
7 Frequency of
DIN7
Hz
8 Frequency of DIN8 Hz
9 Frequency of
DIN9
Hz
10 Frequency of
DIN10
Hz
DAY
provides the actual calender day as
integer (1 .. 31).
HOUR
provides the actual hour as integer
(0 .. 23).
MINUTE
provides the actual minute as integer
(0 .. 59).
SECOND
provides the actual second as integer
(0 .. 59).
WEEKDAY
provides the day of the week as integer
(Monday = 1 .. Sunday = 7).
YEARDAY
provides the day of the year as integer
(1st January = 1).
Click
OK
to save the settings into the data logger.
As the measurement functions represent virtual
channels they are independent of the number of
hardware inputs of the data logging system. The
user can define an unlimited number of measure-
ment functions.
Data Polling
The
blueberry COMPACT
sends poll commands
through the
RS 485
serial port and to the internal
measurement interfaces. Each poll command pro-
vides a set of return values that are used as vari-
ables in the measurement functions. Please set the
poll parameters as follows:
Baudrate
Select from the
Baudrate
list the
baud rate of the serial port. The
blueberry INPUT Module
requires a
baud rate of
19200
.
Character Delay
Select from the
Character Delay
list
the delay between the characters
sent by the
blueberry COMPACT
to
the serial port. Some sensors (e.g.,
R.M.Young sonic anemometers) re-
quire character delays. The
blue-
berry INPUT Module
is polled with
a character delay of
0
.
Poll Pause
defines the delay between the last
character of a data line received
by the
blueberry COMPACT
and the
sending of the next poll command.
The
blueberry INPUT Module
re-
quires a poll pause of
50 ms
. The
poll pause is required because the
RS 485
bus allows only one compo-