National Instruments NI-FBUS - Manual (Page 62)

Chapter 3 NI-FBUS Configurator Tutorials
NI-FBUS Configurator User Manual 3-4 ni.com
11. Modify the scaling of the AO module. Double-click the AO function
block. Scaling for the AO block is similar to that of the AI block, only
in the reverse direction.
PV_SCALE and PV for an AO block correspond
to the OUT_SCALE and OUT of the AI block—they are the values that
are seen on the bus.
PV_SCALE
EU_100 400
EU_0 –100
Units_Index °C
Decimal 3
XD_SCALE
EU_100 50
EU_0 –50
Units_Index mV
Decimal 3
L_TYPEindirect
12. Adjust the macrocycle of your configuration. The macrocycle is the
least common multiple of all the loop times on a given link. To edit the
schedule, double-click the Schedule icon from the configuration tree.
If you are using a fast device, you might be able to decrease the Loop
Time to .1 second for this configuration. If you decrease the
macrocycle too much, a warning will appear on the Errors tab.
13. Download your configuration by clicking the Download Project
button.
In the download configuration window that appears, select Clear
Devices and Automatic Mode Handling.
Click the Download button when you are ready to download your
configuration. Downloading can take several minutes to complete.
When finished, a dialog box appears informing you that the download
is complete.
14. Test your configuration.
a. Click the Monitoring Mode button in the Function Block
Application Editor window.
b. In the dialog box that appears, select Monitor Block Outputs,
Monitor Wired Parameters, and set the rate to two seconds.
c. Click Start Monitoring.