6-15
Simple Serial Interface
DECODE_DATA
Description: Decode data in SSI packet format
Packet Format
Field Descriptions
This Opcode is used by the decoder when packeted data is selected to send decoded bar code
data to the host. The decoded message is contained in the Decode Data field.
Length
Opcode
Message
Source
Status
Bar code
Type
Decode
Data
Checksum
0xF3
0x00
Field Name
Format
Size
Description
Length
Length of message (not
including checksum).
1 Byte
Length Field
Opcode
0xF3
1 Byte
Identifies this Opcode type.
Message Source
0 = Decoder
1 Byte
Identifies where the message is
coming from.
Status
Bit 0: Retransmit
Bits 1-7: unused
1 Byte
Identifies the transmission status.
Unused bits must be set to 0.
Bar Code Type
See Table 6-6
1 Byte
Identifies the scanned data code
type.
Decode Data
<data>
Variable
Data is decoded data including
prefix and suffix sent in ASCII
format.
Checksum
2's complement sum of
message contents
excluding checksum.
2 Bytes
Checksum of message.
Содержание SE 923
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Страница 138: ...5 86 SE 923 Scan Engine Integration Guide Scan Data Transmission Format PREFIX DATA SUFFIX 1 SUFFIX 2 0x07...
Страница 155: ...5 103 Parameter Menus Numeric Bar Codes cont d 4 5 6 7...
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