Rockwell Automation 2755 AdaptaScan Software - Manual (Page 102)

7–3
Publication 2755-838
The Decoder dialog settings determine when the Reader starts and
stops decoding. The trigger source may be from or on the Reader
you are configuring or another Reader on the same network (when
using DeviceNet peer-to-peer communications). You can use the
same package trigger for multiple Readers on a DeviceNet
peer-to-peer network or you can “chain triggers” where one Reader
is a trigger source for another Reader. Once triggered, the Reader
attempts to decode symbols until a trigger off is received.
Trigger inputs include: Self-Triggered, Package Detect, Discrete
Input, Timer, ASCII Command, Input Timer, or DeviceNet Inputs.
You can also select bracketed indirect trigger sources defined for
other functions such as [Match Table], [Package], [Message].
Note: [Match Table], [Package] or [Message] do not appear as
options unless a trigger has been defined for the match table,
package or message functions.
Self-Triggered Source
The Reader continuously attempts to decode data.
Package Detect Trigger Source
The Reader decodes data only after receiving a trigger from the
package detect sensor attached to the Reader.
Photo-Electric
Package Detector
When Decoding Occurs