Stopping a Web Acquisition Sequence
The Web operation allows two methods to stop the sequence:
- Manual stop (recommended method)
- Automatic stop
If scanned object has a finite length, the automatic stop method can be used to automatically stop the sequence after a pre- defined number of lines. This variant of Web operation is named WEB Finite. In this case, the number of lines to be acquired needs to be specified before Channel activation.
More often the length of the object is unknown. Therefore, the manual stop method is required. In this case, the parameter SeqLength_Ln should be set to -1, in order to define an infinite Web acquisition sequence.
Manual Web acquisition sequence stop
The Web acquisition sequence stops by setting ChannelState to IDLE.
Two flavors of stop are selectable with parameter BreakEffect:
- When BreakEffect=FINISH, the Web acquisition sequence stops after the completion of the surface filling.
- When BreakEffect=ABORT, the Web acquisition sequence stops immediately, interrupting also the filling of the current surface. The last surface might be partially filled.
Automatic Web acquisition sequence stop
An automatic stop is available for the Web acquisition sequence. Two methods are available.
Automatic Stop after specified number of lines
Use parameter SeqLength_Ln to specify the total number of lines to be acquired. The sequence will automatically stop after the last acquired line. The last surface might be partially filled.
Range of values for LineCount is:
- SeqLength_Ln > 0
- SeqLength_Ln < (PageLength_Ln * 65,535)
Automatic Stop after specified number of surfaces filled
Use parameter SeqLength_Fr to specify the number of surfaces to be filled. The sequence will automatically stop after the filling of the last surface.
Range of values for SeqLength_Fr is:
- SeqLength_Fr > 0
- SeqLength_Fr < 65,535