Справочник Пользователя для National Instruments 321645c-01
Chapter 2
Function Reference — DIG_SCAN_Setup
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National Instruments Corporation
2-191
NI-DAQ FRM for PC Compatibles
Figure 2-13. Digital Scanning Output Group Handshaking Connections
For DIO-24 users, the correct W1 jumper setting is required to allow
DIG_Block_In
and
DIG_Block_Out
to function properly. If port 0 is configured as a handshaking output port,
set jumper W1 to PC4; otherwise, set the jumper to PC6. However, if port 0 is configured as
bidirectional, set the jumper to PC2.
bidirectional, set the jumper to PC2.
Also, if port 0 is configured as bidirectional on a PC-DIO-24, port 1 will not be available.
Port
x
1
ACK*
External Device
(last port in portList)
Port
x
n
Port
x
2
ACK*
ACK*
OBF*
OBF*
OBF*