Rockwell Automation 2755 AdaptaScan Software - Manual (Page 213)

G–8
Publication 2755-838
O
orientation
The alignment of bars and spaces to the scanner. Often referred to as
Picket Fence or Step Ladder.
output counter
A counter that is associated with each output condition. The counter
increments by one each time the condition occurs.
P
package
The definition of a package is variable since a package is whatever
the selected match table entries define as a package. When defining
a package, you must select the match table entries that indicate a
package has been read.
parity bit
An additional non-data bit attached to a binary word to provide a
check of the data integrity by making the sum of the number of ones
in a word always even or odd.
peer-to-peer
Communications between AdaptaScan Readers over a DeviceNet
network without a network scanner (such as the 1771-SDN scanner).
performance indicator limit
A set point that will produce a discrete output if the performance
indicator falls below the set point value.
picket fence code
A code pattern in which the direction of travel of the symbol is
perpendicular to the bars and spaces of the code.
port
On a communication link, the logic circuitry or software at a station
that determines its communication parameters for a particular
communication channel.