User guide

Message Intersect & Pack
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Tools
Message Pack
ESC_AddLen Pack
ESC_AddLen pack format:
[STX] +[LEN] + [DATA] + [ETX] + [BCC]
STX：0x02。
LEN：Barcode message length is expressed by 4 bytes. Every byte for an ASCII, and thus it
ranges “0~9999”. For example, LEN=0x30303137, refer to the ASCII chart for decimal value.
0x30303137=0017 (0x30=0, 0x31=1, 0x37=7).
DATA：Barcode message
ETX：0x03。
BCC：Parity byte.
The algorithm:
1. computation sequence is BCC = [STX
] +[LEN] + [DATA] + [ETX]
2. computation method is XOR, byte by byte
ESC_AddLen Pack
【Pro CMD：0314040】