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4-2-5.
CMD_NAK
・ Feature: NAK
Length
04
Field
Length
Operation
Code
Message
Source
Status
Cause
Checksum
Negative acknowledgement for command data.
Operation Code
Message Source
D1
Format
Size
(Byte)
Length
D1
0:Module
4:Host
Bit0: retransmit
Bit1: Unused
Reason code
Status
1
The length of a packet excluding checksum.
1
Packet ID
1
From The Host System to This Scan Engine
and vice versa
1
1
0：Reserved
1: Checksum failure
2: Illegal Operation Code or Format
6: Other negative acknowledgement
Others: Reserved
2
Two's complement sum of message contents
(from Length to Data Field).
27
OPTICON
Software Guide
MDL-1000/2000
Cause
Checksum
Function
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