cFP-2200/2210/2220
26
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You can use the two digital inputs to control the cFP system from
LabVIEW. For example, one input could be a START/STOP switch, and
the other could determine which of two VIs should run at startup. NI
recommends connecting a single-pole single-throw (SPST) switch between
the input terminal and one of the C terminals. The inputs have a value of 1
when the switch is closed and 0 when the switch is open.
Figure 28.
Wiring the cFP-2220 External Input and Output Terminals
Connecting USB Flash Drives to the cFP-2220
You can connect USB Flash drives to the cFP-2220 while the controller
is operating. USB devices are mapped to the
U:
drive in LabVIEW.
The cFP-2220 does not support other types of USB devices. Refer to
the
LabVIEW Real-Time Module Help
for more information.
Caution
Do not hotswap USB devices while the Compact FieldPoint system is in a
hazardous location or connected to high voltages.
Using the Internal Real-Time Clock
The system clock of the cFP-22
xx
gets the date and time from the internal
high-precision real-time clock at startup. This synchronization provides
timestamp data to the controller. You can also use the internal real-time
clock to correct drift of the system clock. Please contact National
Instruments for more information.
C
C
O2
C
O1
LED B
C
I2
I1
LED A
R2
R1
S
witch 2
S
witch 1
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