6-5
Simple Serial Interface
SSI Message Formats
The following sections describe each of the SSI messages that can be communicated between
the decoder and host. See
on page 6-34 for the protocol required to transmit
these messages.
AIM_OFF
Description: Turn off aiming pattern
Packet Format
Field Descriptions
Host Requirements
This command applies only to decoders that support an aim pattern (see Table 6-10 on page
6-27).
Length
Opcode
Message Source
Status
Data
Checksum
0x04
0xC4
0x04
Field Name
Format
Size
Description
Length
Length of message (not
including checksum).
1 Byte
Length Field
Opcode
0xC4
1 Byte
Identifies this Opcode type.
Message
Source
4 = Host
1 Byte
Identifies where the message is
coming from.
Status
Bit 0: Retransmit
Bit 1-7: Unused
1 Byte
Identifies the transmission status.
Unused bits must be set to 0.
Data
None
Checksum
2's complement sum of
message contents
excluding checksum.
2 Bytes
Checksum of message.
Summary of Contents for SE 923
Page 1: ...SE 923 Scan Engine Integration Guide...
Page 3: ...SE 923 Scan Engine Integration Guide 70 37052 01 Rev A February 1999...
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Page 29: ...2 7 Installation Figure 2 3 Exit Window Positioning CASE 1 CASE 2...
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Page 135: ...5 83 Parameter Menus Prefix Suffix Values DATA FORMAT CANCEL...
Page 155: ...5 103 Parameter Menus Numeric Bar Codes cont d 4 5 6 7...
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