Baracoda 2 - Manual (Page 5)

BaracodaPencil 2 – Communication Protocol v1.3 - 5 -
Data Capture
for Workforce
in Motion
2. 2. 2. 2. Communication protocol Communication protocol Communication protocol Communication protocol
2.1. 2.1. 2.1. 2.1. Bidirectional packets Bidirectional packets Bidirectional packets Bidirectional packets
2.1.1. 2.1.1. 2.1.1. 2.1.1. Control messages Control messages Control messages Control messages
2.1.1.1. Specific packets
Code ID Description Frame
0x01 Legacy 0x01 0x01 0x01
Or
0x01 0x02 0x01
These two (2) sequences will be recognized and purged for backward compatibility with older
Baracoda products.
2.1.1.2. Acknowledgment packets
Code ID Description Frame
0x06 ACK 0x06 0x01 0xYY
0x15 NACK 0x15 0x01 0xYY
These messages acknowledge the reception of a valid message with the expected sequence number
0xYY, before processing it.
For captured data from the scanner, ACK and NAK have the same meaning but will trigger a different
event on the scanner.
2.1.1.3. Synchronization packet
Code ID Description Frame
0x16 SYN 0x16 0x01 0xYY
This message acknowledges the reception of a message to acknowledge with an unexpected
sequence number. 0xYY is the expected sequence number.
The device will resynchronize its remote sequence number when receiving this message.