Справочник Пользователя для National Instruments FP-3000
Chapter 3
Example Applications
3-14
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National Instruments Corporation
Connect the PID to the AI and AO Blocks
1.
Drag the new PID block to the Function Block Application window.
All three of your blocks (AI, AO, and PID) should be in the window.
If not, drag the remaining blocks into the window now.
All three of your blocks (AI, AO, and PID) should be in the window.
If not, drag the remaining blocks into the window now.
2.
Using the wiring tool, connect the
OUT
parameter from the AI to the
IN
parameter of the PID.
3.
Connect the
OUT
parameter of the PID to the
CAS_IN
parameter of
the AO.
4.
Connect the
BKCAL_OUT
parameter of the AO to the
BKCAL_IN
parameter of the PID. Figure 3-4 shows what your connections should
look like.
look like.
Figure 3-4. PID Block Connections Dialog Box
Download and Bring the Loop into Auto
1.
Select Configure»Download Configuration to download your
connection to the network. This establishes all the linkages that you
“wired” in the previous step. It also schedules the PID function block,
which has not yet been scheduled to execute.
connection to the network. This establishes all the linkages that you
“wired” in the previous step. It also schedules the PID function block,
which has not yet been scheduled to execute.
2.
When the download is complete, open the PID block.
3.
Look at the
MODE_BLK
parameter. Set the
TARGET
to
Auto
.