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NI 9144 User Guide and Specifications
Note
Both the input and output bytes are transmitted in the PDO regardless of the
direction control. You only connect relevant bits to the I/O pins.
NI 9402
The vendor configuration extensions for the NI 9402 are listed in Table 105.
NI 9402 Direction Control
Note
Both the input and output bytes are transmitted in the PDO regardless of the
direction control. You only connect relevant bits to the I/O pins.
NI 9403
The vendor configuration extensions for the NI 9403 are listed in Table 107.
NI 9403 Direction Control
The direction control field has one bit for each I/O pin, with bit 0 matching channel 0, and so
forth. 0 in the direction control indicates that I/O is an input; 1 indicates an output.
Note
Both the input and output bytes are transmitted in the PDO regardless of the
direction control. You only connect relevant bits to the I/O pins.
NI 9476
The vendor configuration extensions for the NI 9476 are listed in Table 108.
Table 105.
NI 9402 Vendor Configuration Extensions
Index
Sub
Type
R/W
Description
0x2001
0
U32
R/W
Line direction control, default = 0
Table 106.
NI 9402 Scan List Format
Bits
Field
3
0: data bit as input
1: data bit as output
2
1
0
Table 107.
NI 9403 Vendor Configuration Extension
Index
Sub
Type
R/W
Description
0x2001
0
U32
R/W
I/O direction control, default = 0