Hameg HM8112-3 Benutzerhandbuch Seite 62

D a t a C o m m u n i c a t i o n
Answers:
00XX Measurement
functions
010X Autoranging
011X Measurement time
012X Filter length
014X Math program
016X Trigger mode
018X Temp. Selection
019X Results memory
019X Results memory
019X Results memory
01AX Results buffer
01AX Results buffer
01CX Temp. compensation 0,1,2
– Parameter 3 disables the auto status function (02D4) and
the continuous status function (02D5).
– Parameter 4 turns the auto status function (02D4) on. The
continuous status function (02D5) will be disabled if active.
If commands are sent via the interface all commands of
groups 0 and 1 will be echoed immediately, asynchronously
to the measurements. If commands are received which are
not implemented 02DX will be sent (helpful when looking
for errors in the control program). The following informa-
tions will be issued immediately after any keyboard ope-
ration or in case of, e.g., result memory full, auto range:
00XX, 0100, 0101, 0111-7, 0140, 0147, 0148, 0182-5, 0190,
0191, 0198, 01C1, 01C2.
– Parameter 5 turns the continuous status function on. The
auto status function, if active, will be disabled. After each
result obtained the actual function and range will be trans-
mitted in the format 00XX, followed by the transmission of
the measurement time in the format 011X. Any information
of group 1 caused by a status change of the instrument will
be stored and transmitted in place of the measurement
time synchronously with the next result. In case there will
be more than one group 1 information caused by a keyboard
operation or by the instrument's control program (e.g. result
memory full, auto range) within the same measurement cyc-
le those informations will overwrite each other. Only the last
information will be transmitted with the next result. Range
or function changes via the keyboard may cause several
group 1 informations. Hence only the status of the auto
range function will be transmitted, messages concerning
changes of the functions Max/Min or the result memory will
be suppressed. (this does not apply to commands received
via the interface). These status changes may be taken from
the following table:
Max/Min
Change of range restart
Change of function off
Full information about the instrument status may be recei-
ved by the command 02C2.
The auto status function has this format:
+/-X.XXXXXX Result with sign
0XX Function and range
1XX Group 1 information
The following group 1 informations are transmitted: 0100,
0101, 0111-7, 0120-4, 0140-4, 0140-143, 0147, 0148, 0184-5,
0190, 0191, 0198, 01C0-1C2.
62
Subject to change without notice
PARAMETER:
0-6, 9 Ranges and sensors
0,1 Off or On
1-7 10 ms to 60 s
0-4 Off, 2 to 16
0-3, 7, 8 Off, Offset, High
Limit, Low Limit,
Max, Min.
0,1 single or auto
4,5 degree C or F
0,1 Off or On
7 Full
8 Single result storage
0,1 Off or On
5 Autoclear selected
External, 23 degr. C,
PT temperature
measurement
Result memory
off
off
If buffer operation is active (01A1) the auto status function
will remain active, function, range, and group 1 information
will be be stored in the ring buffer together with the results.
The description of the auto status function remains valid in
full. Any commands of groups 0 and 1 will be echoed after
their execution. These echoes may be used for handshaking
obviating any waiting times.
Function F (data) provides instrument information.
– Parameter 0 issues the 6 digit software revision number
XXXXXX.
– Parameter 1 issues the last calibration date in the format
DDMMYY
- Parameter 2 issues the serial number.
- Parameter 3 issues the milliohms of the cable resistance
compensation in case of 2-wire PT100- (PT1000-) tempe-
rature measurements.