Barcode Transfer 3 - 5
•
Final block
• Barcode Fragmented and Last Fragment bits in the Status Register are set.
• Input Length is set to remaining size of the barcode data.
• The Input Data field contains final portion of the barcode data.
Sequence Chart
Figure 3-2 illustrates the mechanism used to transfer a 1000 byte barcode when the Input Data field size is limited
to 400 bytes.
The chart does not show every I/O message, but shows the changes in the I/O message content. Depending on
the I/O connection cyclic interval, a given message content may be repeated multiple times between the cradle and
controller.
Figure 3-2 Mechanism Transfer 1000 Byte Barcode When Input Data Field Size is Limited to 400 Bytes
Determining Trigger State
The current state of the scanner trigger button can be obtained through the Trigger State status bit. This bit is unset
when the trigger is released and set when the trigger is pulled. This feature is only supported with EA3600
Point-To-Point SKUs.
NOTE The Trigger State bit is cleared when a barcode was read by the scanner regardless of the actually trigger
button state. This is done to alleviate any confusion that the scanner may still be armed and trying to read
a barcode.
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General