Magnet-physik EF 14 - Basic Commands; Read and Write Commands; Measuring Commands

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
40
is the Drift menu, as any write commands are accepted as long as this menu is active (see also
the description of the DRIFT command).
6.2 Basic Commands
*IDN? Identification. The EF 14 answers with manufacturer name, device name,
serial number and software version:
MAGNET-PHYSIK, EF 14 Electronic Fluxmeter, xxxxxx,
Vx.x
*OPC? Operation complete query. The EF 14 sends a 1, after all previously received
and stored commands have been processed.
*OPT? Option query. The EF 14 answers with the serial number of the connected
measuring coil, if this has a data memory and the serial number is available.
Otherwise 0 is returned.
*RST Empties the command queue and reinitializes the interface.
6.3 Read and Write Commands
Read commands start with a question mark, write commands with a # (see above).
6.3.1 Measuring Commands
The EF 14 can send single measurements or cyclically a series of measurements. Single
measurements can be requested using the ?MEAS command. The cyclic output is controlled by
the #NMEAS and #MULTI commands. For the fast data mode (see chapter 4.4) the #SPEED
command is used.
MEAS Request a current measurement. Parameter: none, 0, 1.
Read: ?MEAS
Answer: MEAS value unit
Read: ?MEAS 0
Answer: value unit (without MEAS)
Read: ?MEAS 1
Answer: MEAS value unit (like without parameter)
Instead of a letter as prefix for the decimal power, the value is sent in
exponential notation via the interface. Positive values are sent without the
sign.
Example: Display reading: +123.4 mT
Answer of ?MEAS: MEAS 123.4E-3 T
This representation allows an easier conversion of the strings into numbers.