Baracoda All in One Printer manual Introduction generic packet format, Etx

Data Capture

for Workforce

in Motion

1.Introduction: generic packet format

All the frames described in this document are formatted as shown (*):

STX

Frame #

Nbr of cmds

Command 1

… Command x Check sum

ETX

1 byte 1 byte 1 byte 3 ￿ n bytes … 3 ￿ n bytes 1 byte 1 byte

		Command ID	Data length	data
		1 byte	1 byte	x bytes
Ba) 1 Byte	: STX
Bb) 1 Byte	: Frame number
Bc) 1 Byte	: Number of commands (or number of commands responses)
Bd) 3..n Bytes	: Command 1
…
Bx) 3..n Bytes	: Command x
…
		x
By) 1 Byte	: CheckSum = ( ∑ Bi ) mod 256
		i =b
Bz) 1 Byte	: ETX

Each command is formatted as follows:

Ca) 1 Byte	: Command ID
Cb) 1 Byte	: Data length
Cc) 0..n Bytes	: Data

(*): a limited number of frames do not follow this format. They are described in the section 2/.

ToughRunners / ScanWear – Communication Protocol v1.2 - 4 -