American Magnetics 135 & 136 Liquid Helium Level Instruments (CE-Marked) - Manual (Page 53)

Rev. 3 41
Virtual Instrument Operation
RS-232 Virtual Instrument
Open the Model 13X via Serial Port.vi. Before running the VI, the user
must select an initialization option and provide any necessary settings. In
order to initialize the VI, scroll to the area above the virtual front panel.
Several controls are visible for setup by the user. The figure below
illustrates the available controls. The Initialize State from Instrument?
switch allows the user to select whether the instrument is initialized from
the current settings of the actual instrument or from the controls available
from the VI. If the Yes option is selected, the VI will initialize all settings
from the actual instrument. If the No option is selected, the user should
enter all data in the control fields (Sensor Length, Hi Setpoint, etc.) in the
indicated units.The user should also select the correct RS-232 port and
baud rate, according to the port to which the Model 135/136 is connected
Serial Port Send.vi Manages sending and receiving of ASCII
strings from the actual instrument.
Set 136 A via Serial Port.vi Configures the A setpoint.
Set 136 B via Serial Port.vi Configures the B setpoint.
Set 13X Interval via Serial
Port.vi
Configures the sampling interval setting.
Set 13X HI via Serial Port.vi Configures the HI setpoint.
Set 13X Length via Serial
Port.vi
Configures the sensor length.
Set 13X LO via Serial Port.vi Configures the LO setpoint.
VI Function
0RGHO 
0RGHO