American Magnetics 185 & 186 Liquid Level Instruments (CE-Marked) - Manual (Page 65)

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Virtual Instrument Operation
IEEE-488 Virtual Instrument
6.2 IEEE-488 Virtual Instrument
The IEEE-488 (or GPIB) VI functions nearly identically to the RS-232 VI
with a few exceptions. The VI library, provided in the file
MODEL18X.LLB, for the IEEE-488 virtual instrument contains the
following files:
The Model 18X via GPIB.vi in the MODEL18X.LLB library should be used
if the Model 185/186 has exclusive control of the GPIB bus, i.e. is the only
device queried on the bus.
An additional library provided on the LabVIEW floppy disk,
COMP18X.LLB, contains all the VI’s included in the MODEL18X.LLB
library along with the additional Non-exclusive loop control.vi and
reusable version of the Model 18X via GPIB.vi. The Non-exclusive loop
control.vi
provides a control example which can be customized to coexist
VI Function
18X Alarms.vi Manages alarm functions for 185/186.
Config 18X via GPIB.vi Initializes actual instrument from VI
configuration.
Convert from CM.vi Displays inches or percentage given input in cm.
Counter.vi Timer function for the virtual display.
Get 18X Level via GPIB.vi Updates virtual display with current level.
Init from 18X via GPIB.vi Initializes VI configuration from actual
instrument.
Model 18X via GPIB.vi
The main VI containing the configuration and
front panel controls. This is the VI the user
should open and execute.
Non-exclusive loop
control.vi
This VI,
which is only available in the
COMP18X.LLB library
, should be modified and
executed for non-exclusive GPIB operation.
GPIB Send.vi Manages sending and receiving of ASCII strings
from the actual instrument.
Set 186 A via GPIB.vi Configures the A setpoint.
Set 186 B via GPIB.vi Configures the B setpoint.
Set 186 Fill via GPIB.vi Configures the fill interval setting.
Set 18X HI via GPIB.vi Configures the HI setpoint.
Set 18X Length via GPIB.vi Configures the active sensor length.
Set 18X LO via GPIB.vi Configures the LO setpoint.
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