This appendix provides application notes to describe the general format of data that can be accepted by the scanner
through the auxiliary port as transmitted from a handheld scanner.
Handheld Data Format Requirements General
•
9600 bps, 8 data bits, 1 stop bit, no parity.
•
RTS is used to "bracket" the data received from the handheld: RTS must be asserted high during data trans-
mission, and de-asserted after label transmission is complete. CTS is used to hold off transmission of label
from handheld.
•
Symbologies requiring fixed lengths (UPC/EAN) will enforce length requirements for validation of the label.
•
Handheld will be required to transmit start and stop characters for Codabar and Code 39 labels.
•
Appropriate industrial length requirements will be enforced (if configured) for validation of the label.
•
Maximum label lengths will be enforced for label validation (i.e. labels longer than the maximum label size
will not be validated).
•
Standard Datalogic formats generally use a single prefix character. The specific formats are provided below.
•
Suggest that handheld turn off audible and visual good read indications to minimize operator confusion.
•
Scanner will indicate if a label of improper format has been received from the handheld by sounding a "trill."
Product Reference Guide
Handheld Data Format Requirements
Appendix I
187