Keithley KPCI-PIO24, Руководство пользователя, Страница: 47 / 66

KPCI-PIO24 User’s Manual Troubleshooting 5-13
Figure 5-4
Setting port input and output ‘Configure’ switches
8. Using the port A ‘write/read’ switch on the PIO Control Panel, set port A to ‘write’ as shown
in Figure 5-5.
Figure 5-5
Port A ‘write/read’ switch setting
NOTE A port configured for output, such as port A in this case, can be set
for either read or write mode. In write mode, you may toggle bit
settings high or low by clicking the DIP switches. In read mode,
however, DIP switches only monitor the bit settings currently in the
I O register; you cannot change bit settings.
A port configured for input, such as port B or C in this case, can only
be used in the read mode. DriverLINX selects the read mode
automatically when the port is configured for input.
9. Using the DIP switches on the PIO Control Panel, set port A to bit pattern 1, shown in
Figure 5-6. Bit pattern 1 corresponds to a byte value of 55 in hexadecimal.
PORT A
Configure
n
Output
Input
PORT B
Configure
Output
n
Input
PORT C
Configure
Output
n
Input
PORT A
n
write
read