Lexicon, Inc.
MC-12 Serial Communications Protocol
Printed on: 08/18/03
© 2003 Lexicon, Inc. All rights reserved.
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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
DC_FPD
0x03
Data Count
42
0x2A
Application Data:
Data[0] - Data[20]
Line1
ch ch ch… 0x00
Data[21] - Data[41]
Line2
ch ch ch … 0x00
7.1.3.2 Data Description
Line1
Data Type:
Null (0x00) terminated ASCII character string.
Max Length:
DISP_LINE_LENGTH defined in
Appendix G Protocol Constants
.
Line2
Data Type:
Null (0x00) terminated ASCII character string.
Max Length:
DISP_LINE_LENGTH defined in
Appendix G Protocol Constants
.
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.
The MC-12 with s/w V3.0 will disable this notification by default.
This notifications can be enabled and disabled by using the commands described in 7.3.31 Get
Communication Configuration (MC-12, MC-1) and 7.3.32 Set Communication Configuration (MC-12,
MC-1).
