American Magnetics 185 & 186 Liquid Level Instruments (CE-Marked) - Manual (Page 59)

Rev. 3 49
Remote Interface Reference
Serial Poll Status Byte
5.2.4.6 Commands for performing remote calibration
The calibration commands perform a remote calibration equivalent to
activating the front panel MIN, MAX, and “~” (approximate) calibration
buttons. The calibration is automatically saved to permanent memory. See
the Calibration section for more information regarding calibration.
5.2.5 Serial poll status byte
The IEEE-488 serial poll status byte (spoll byte) can be used to obtain
information about the state of the instrument. Bit 7 of the status byte is
reserved for SRQ. The remaining bits are used to provide custom
information as shown in the table below.
Note
The fill mode indication is only accurate if the fill mode toggle
switch on the front panel is in the AUTO position. There is no
remote indication or control available for the OPEN or CLOSED
manual override selections.
Command: MINCAL Function: Performs a MIN
calibration
Returns: MINCAL
Command: MAXCAL Function: Performs a MAX
calibration
Returns: MAXCAL
Command: APPROX=
<value>
Function: Performs an
approximate
calibration using
<
value>
as the
approximate
calibration factor
Returns: APPROX =
<value>
Bit ON OFF
1 (LSB) HI relay on HI relay off
2 A relay on A relay off
3 B relay on B relay off
4 LO relay on LO relay off
5 Fill mode on
(controller output energized)
Fill mode off
(controller output de-
energized)
6 Data ready No data available
7 Service Request (SRQ) No SRQ
8 Not used Not used
0RGHO 
0RGHO 
0RGHO