User`s guide

28 • DDE Item Names In PCIS-DDE
4.1 PCI-7200/7432
Digital I/O Command Set
Command Item Name
Requested/Poked
value
R/W Data Type
Digital Data In in digital
format
PDI*
Data: xxxxxxxxxx
Example: 1234567890
Range: -2147483648~
2147483647
R Integer
Digital Data Out in
digital format
PDO*
Data: xxxxxxxxxx
Example: 1234567890
Range: -2147483648~
2147483647
W Integer
Digital Data In in real
format
PRDI
Data:xxxxxxxxxx
Example: 1234567890
Range: 0 ~
4294967295
R Real
Digital Data Out in
String mode
PSDO
Data: xxxxxxxxxx
Example: 1234567890
Range: 0 ~
4294967295
W String
Nth bit Digital Data In
(N is the bit number)
PBI0…PBI31 Data: 0 or 1 R Integer
Fast Nth b
it Digital Data
In (N is the bit number)
PASBI0 …
PASBI31*
Data: 0 or 1 R Integer
* For InTouch, the value of Nth bit of PDO/PDI can be poked/advised by
using Tag.0N as the item name. For example, to poke the value of the 0th
bit of PDO, set tagname as Tag.00, or to poke the value of the 1st bit of
PDO, set tagname as Tag.01.
* To get the value of Nth bit of PDO/PDI by using Tag.0N as the item name,
the data type of PDO/PDI have to be set as integer. As mentioned before,
the “integer” is “32 -bit signed i nteger” in InTouch. That means the range of
“integer” is –2147483648 ~ 2147483647. However, to poke or advise the
32-bit unsigned data, use “PRDI” (the data type is real) for digital input or
“PSDO” (the data type is string) for digital output.