I/O Port Bit Assignment
CNT24-4D(PCI)
30
Setting Data
Normally, to set 8-bit data, a command is output to the +0 port and
data straight to the +1 port. However, in the case of 24-bit data,
the command is output first from the +0 port and then the +1 port is
output three times. At this time, the data is set in the order of
lower, middle and higher bytes. The +1 port is read three times to
read 24-bit data in the order of lower, middle and higher bytes.
In a similar manner, 32-bit data is set by outputting the +1 port four
times from the lower bytes.
Summary of Contents for CNT24-4D(PCI)
Page 1: ...CNT24 4D PCI 24Bit Differencial Up Down Counter Board for PCI User s Guide ...
Page 29: ...Board Setup CNT24 4D PCI 20 ...
Page 63: ...I O Port Bit Assignment CNT24 4D PCI 54 ...
Page 66: ...Board Specifications CNT24 4D PCI 57 External Dimensions 176 4 107 0 mm ...
Page 67: ...Board Specifications CNT24 4D PCI 58 ...