Communication Errors; Rf Communication Errors; Host / Cradle Communication Errors - Symbol P370 Keyless Reference Manual

P370/P470 Keyless RF Scanners Product Reference Guide

Communication Errors

A communication error occurs when the scanner, cradle or host fails to properly
communicate. When a communication error occurs using the default application, the
scanner emits 4 beeps (long Lo). For a detailed list of all the error codes see
Error Indications and Beeps
Three types of communication errors can occur:
1. The RF transmitted data was NOT received by the cradle.
2. The cradle received the RF transmitted data, but the scanner did NOT receive a
cradle's acknowledgment.
3. The host and cradle are not communicating properly.

RF Communication Errors

1. If the RF transmitted data was NOT received by the cradle, move the scanner
closer to the cradle to reestablish communication, then re-scan the bar code. If the
communication has been reestablished, the scanner will sound a good decode
beep and no error beeps. Resume normal scanning.
2. If the cradle received the RF transmitted data, but the scanner did NOT receive a
cradle's acknowledgment, move the scanner closer to the cradle to reestablish
communication, then re-scan the bar code. If the communication has been
reestablished, the scanner will sound a good decode beep and no error beeps. In
this scenario data may have been transmitted to the host. If the cradle had
previously sent data to the host, it will NOT pass this re-scanned data to the host.
Resume normal scanning.
For additional information see Optimizing RF Performance on page 1-9.

Host / Cradle Communication Errors

If the host and cradle are not communicating properly, ensure the cabling is properly
connected, baud rate is properly set, and correct COM port has been selected.
2-2
and Beeper Indications on page 3-5.
Appendix C,