SIMPLE SERIAL INTERFACE
59
SSI Commands Table
Name
Type
Opcode
Description
CMD_ACK
H/D
0xD0
Positive acknowledgment of received
packet.
CMD_NACK
H/D
0xD1
Negative acknowledgment of received
packet
DECODE_DATA
D
0xF3
Decode data in SSI packet format.
PARAM_DEFAULTS
H
0xC8
Set parameter default values.
PARAM_SEND
H
0xC6
Send parameter values.
SCAN_DISABLE
H
0xEA
Prevent the operator from scanning
barcodes.
SCAN_ENABLE
H
0XE9
Permit barcode scanning.
SLEEP
H
0xEB
Request to place the reader into sleep
state.
WAKEUP
H
N/A
Wakeup reader after it’s been powered
down.
Note:
D = Reader, H = Host, H/D = Host/Reader
The Figure
below shows the general packet format for SSI messages, and the
lists the descriptions of fields that occur in all messages. These
descriptions are repeated for each opcode in the SSI message formats section. For
messages that use the
Data
field, the specific type of data is shown in that field.
Length
Opcode
Message Source
Status
Data
Checksum
General Packet Format
Содержание Dragon D151
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