User`s guide

34 • DDE Item Names In PCIS-DDE
* “PASBIn” and “PBIn” (n is the bit number) commands are both used for
n-th bit digital data in. For signal bit digital data input, the performance of
these two commands are almost the same. However, for multi-bits digital
data input, using “PASBIn” can get much higher performance than “PBIn”.
Hence “PASBIn” command is especially suitable for multi-bits digital data
input.
4.6 PCI-7433
Digital I/O Command Set
Command Item Name
Requested/Poked
value
R/W Data Type
Digital Data In in
digital format
PDI0 ~ PDI1*
Data: xxxxxxxxxx
Example: 1234567890
Range: -2147483648~
2147483647
R Integer
Digital Data In in real
format
PRDI0~
PRDI1
Data: xxxxxxxxxx
Example: 1234567890
Range: 0 ~ 4294967295
R Real
Nth bit Digital Data In
(N is the bit number)
PBI0 …
PBI63
Data: 0 or 1 R Integer
Fast Nth bit Digital
Data In (N is the bit
number)
PASBI0 …
PASBI63*
Data: 0 or 1 R Integer
* There are 64 digital input channels in a PCI-7433 card. Please refer to the
PCI-7433 user’s manual for the details. In PCIS-DDE server, the digital
input ports and their related item names of PCI-7433 are defined as
follows:
Channel Number Port Item Name
0 ~ 31 0 PDI0 / PRDI0
32 ~ 63 1 PDI1 / PRDI1
* For InTouch, the value of Nth bit of PDI0/PDI1 can be advised by using
Tag.0N as the item name. For example, to advice the value of the 0th bit
of PDI0, set tagname as Tag.00, or to poke the value of the 1st bit of PDI0,
set tagname as Tag.01.