Ssi Message Formats; Aim_Off - Symbol SE 923 Integration Manual

SSI Message Formats

The following sections describe each of the SSI messages that can be communicated between
the decoder and host. See SSI Transactions on page 6-34 for the protocol required to transmit
these messages.

AIM_OFF

Description: Turn off aiming pattern
Packet Format
Length
0x04
Field Descriptions
Field Name
Length
Opcode
Message
Source
Status
Data
Checksum
Host Requirements
This command applies only to decoders that support an aim pattern (see Table 6-10 on page
6-27).
Opcode Message Source
0xC4
Format
Length of message (not
including checksum).
0xC4
4 = Host
Bit 0: Retransmit
Bit 1-7: Unused
2's complement sum of
message contents
excluding checksum.
Status
0x04
Size
1 Byte Length Field
1 Byte Identifies this Opcode type.
1 Byte Identifies where the message is
coming from.
1 Byte Identifies the transmission status.
Unused bits must be set to 0.
None
2 Bytes Checksum of message.
Simple Serial Interface
Data Checksum
Description
6-5