Mc-1 Parameter Change (Mc-12, Mc-1) - Lexicon MC-12 V2.0 - SERIAL COMMUNICATIONS PROTOCOL DEFINITION REV 1-3 Manual

Lexicon, Inc.
MC-12 Serial Communications Protocol
communication and will only transmit following the completion of any communication exchanges in
progress or pending.
7.1.3.1 Notification Packet Description
Application Header:
Command
Data Count
Application Data:
Data[0] - Data[20]
Data[21] - Data[41]
7.1.3.2 Data Description
Line1
Data Type:
Max Length:
Line2
Data Type:
Max Length:
The MC-12 includes 8 custom characters that are defined to display increments of a display block. (i.e.
Volume Bar) The custom characters are ASCII character codes 8E - 93(hex). The codes are used as
follows:
'8E' - empty cell
'8F' - left 1 bar
'90' - left 2 bars
'91' - left 3 bars
'92' - left 4 bars
'93' - full cell
7.1.3.3 HOST Response
The MC-12 does not expect any response from the HOST.

7.1.4 MC-1 Parameter Change (MC-12, MC-1)

MC-12 will transmit predetermined parameter change notifications. If a parameter value is changed due to
any user action or system action the MC-12 will transmit the current value of the parameter that is changing.
This command has been maintained for backward compatibility with MC-1. In order to maintain backward
compatibility, the MC-12 Parameters have been mapped to the MC-1 parameters as described in the
Supported System Parameters table listed below.
7.1.4.1 Notification Packet Description
Application Header:
Command
Data Count
Application Data:
Data[0]
Data[1]
© 2002 Lexicon, Inc. All rights reserved.
DC_FPD
42
Line1
Line2
Null (0x00) terminated ASCII character string.
DISP_LINE_LENGTH defined in
Null (0x00) terminated ASCII character string.
DISP_LINE_LENGTH defined in
DC_PARAM_CHG_MSG
2
ParamId
Value
Printed on: 10/10/02
0x03
0x2A
ch ch ch... 0x00
ch ch ch ... 0x00
Appendix G Protocol Constants.
Appendix G Protocol Constants.
0x04
0x02
nn
nn
11 of 92