National Instruments Welding System 321645c-01 Manual De Usuario
Chapter 2
Function Reference — DIG_SCAN_Setup
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National Instruments Corporation
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NI-DAQ FRM for PC Compatibles
dir selects the direction, input or output, to which the group is to be configured.
0:
Port is configured as an input port (default).
1:
Port is configured as an output port.
2:
Port is configured as a bidirectional port.
The following ports can be configured as bidirectional:
Using This Function
DIG_SCAN_Setup
configures the specified group according to the specified port assignment
and direction. If groupSize is 0, NI-DAQ releases any ports previously assigned to group.
Any configurations not supported by or invalid for the specified group return an error, and
NI-DAQ does not change the group configuration. NI-DAQ subsequently writes to or reads
from ports assigned to a group as a group using
Any configurations not supported by or invalid for the specified group return an error, and
NI-DAQ does not change the group configuration. NI-DAQ subsequently writes to or reads
from ports assigned to a group as a group using
DIG_Block_In
and
DIG_Block_Out
.
NI-DAQ can no longer access any ports assigned to a group through any of the non-group
calls listed previously.
calls listed previously.
Because each port on the DIO-24, AT-MIO-16D, AT-MIO-16DE-10, and Lab and 1200 Series
devices has its own handshaking circuitry, extra wiring might be necessary to make data
transfer of a group with more than one port reliable. If the group has only one port, no extra
wiring is needed.
devices has its own handshaking circuitry, extra wiring might be necessary to make data
transfer of a group with more than one port reliable. If the group has only one port, no extra
wiring is needed.
Each input port has a different Strobe Input (STB*) control signal.
•
PC4 on the I/O connector is for port 0.
•
PC2 on the I/O connector is for port 1.
Each input port also has a different Input Buffer Full (IBF) control signal.
•
PC5 on the I/O connector is for port 0.
•
PC1 on the I/O connector is for port 1.
Each output port has a different Output Buffer Full (OBF*) control signal.
•
PC7 on the I/O connector is for port 0.
•
PC1 on the I/O connector is for port 1.
Device
Ports
AT-MIO-16D
2
AT-MIO-16DE-10
2
Lab and 1200 Series devices
0
DIO-24
0
DIO-96
0, 3, 6, and 9