83
4-8 STOP_DECODE
Description: Ask scanner to abort a decode attempt
Packet Format
Length
Opcode
Status
Checksum
0x04
0x45
(‘E’)
Field Descriptions
Table 4-10 Field Descriptions
Field Name
Format
Size
Description
Length
Length of message (not including
checksum).
1 Byte Length Field
Opcode
0x45
1 Byte Identifies this opcode type.
Status
Bit 0：Retransmit
Bit 1-6：Unused
Bit 7: Command source
1 Byte
Bit 0: Identifies the transmission
status.
Bit 7: 1, Command is from the host.
0, Command is from the scanner.
All unused bits must be set to 0.
Checksum
2's complement sum of message
contents excluding checksum.
2 Bytes Checksum of message.
This command asks the scanner to stop a scan and a decode attempt.
For example:
Length
Opcode
Status
Checksum
0x03
0x45
0x80
0xFF 0x38
Host Requirements
None.
Scanner Requirements
The scanner responds with a ACK or NAK and abort the decode opration, when a STOP_DECODE
command received, if ACK/NAK handshaking is enabled.
