Lexicon, Inc.
MC-12 Serial Communications Protocol
Printed on: 08/18/03
© 2003 Lexicon, Inc. All rights reserved.
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7.2.2 No Acknowledge (MC-12, MC-1)
7.2.2.1 Packet Description
Application Header:
Command
DC_NACK
0xE1
Data Count
20x02
Application Data:
Data[0]
Command
nn
Data[1]
ErrorCode
nn
7.2.2.2 Data Description
Command:
DataType:
Valid MC-12 command as defined in
Appendix A Command Codes
.
ErrorCode:
DataType:
Error code as defined in
Appendix B Error Codes
.
7.3 Host Initiated Command Packets
The MC-12 serial communication protocol has been designed to respond to the following commands as
described below. Each command is transmitted to the MC-12 with the identified parameters. If the
command is successfully received and processed by the MC-12, the unit will respond with the described
response packet or action.
7.3.1 Reset Unit (MC-12, MC-1)
Commands the MC-12 to soft reset.
7.3.1.1 Command Packet Description
Application Header:
Command
DC_CMD_RESET
0x10
Data Count
0
0x00
Application Data:
N/A
7.3.1.2 MC-12 Response
The MC-12 will perform an internal reset. After reset the MC-12 will go through a soft power-up
initialization. This includes transmitting the “Wakeup Notification Packet”. A soft reset does not
reinitialize the MC-12. Nonvolatile RAM is maintained.
7.3.2 Restore (MC-12, MC-1)
Commands the MC-12 to restore the system and effect parameters to the factory defaults.
7.3.2.1 Command Packet Description
Application Header:
Command DC_CMD_RESTORE_DEFAULTS
0x13
Data Count 0
0x00
Application Data:
N/A
