83
4-9 PARAM_DEFAULTS
Description: Set the parameters to factory default values
Packet Format
Length
Opcode
Status
Setting
type
Checksum
0x04
0x25
(‘%’)
Field Descriptions
Table 4-11 Field Descriptions
Field Name
Format
Size
Description
Length
Length of message (not including
checksum).
1 Byte
Length Field
Opcode
0x25
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.
Setting type
Default setting type
1 Byte
0-255.
0: Default setting 0
1: Default setting 1
2: Default setting 2
others: Reserved
Checksum
2's complement sum of message
contents excluding checksum.
2 Bytes Checksum of message.
For example:
return all parameters to the factory default setting values.
Length
Opcode
Status
Setting
type
Checksum
0x04
0x25
0x80
0x00
0xFF 0x57
Host Requirements
The host sends this command to reset the scanner’s parameter settings to the factory default values.
Scanner Requirements
The scanner responds with a ACK or NAK and return all parameters to the factory default setting values
(excluding scanning mode parameters) if ACK/NAK handshaking is enabled, when a
PARAM_DEFAULTS command received. The command has the same effect with the
Default Value
Initialization barcode
on the scanner.
