Instruction Manual

ManualsBrandsAmerican Magnetics ManualsEquipment185 & 186 Liquid Level Instruments (CE-Marked)

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

A relay on A relay off

B relay on B relay off

4 LO relay on LO relay off

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

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