Appendix E - Serial Interface Specifications; Moving Map Output; Rs-232 Serial Interface Selections - II Morrow Inc. Apollo SL50 GPS Installation Manual

A E - S
PPENDIX
This appendix includes the RS-232 serial port interface specifications.
The RS-232 serial interface configurations supported by the SL50/60 are listed in Table 5.
Instructions for configuring the serial port are included in the checkout procedure on page 22.
Selection
N /N
ONE ONE
N /M
ONE AP
N /M C
ONE AP OM
PC / S
ETUP
M M O
OVING AP
The format of the moving map data output is as follows. Definitions of the output data is
included in Table 6 and Table 7. A sample output message is included in Figure 13.
Baud rate: ......................................... 9600
Data bits: .......................................... 8
Stop bits: .......................................... 1
Parity: ............................................... none
Output rate: ....................................... approx 2 seconds
Message length: ................................ variable, approx 83 to 484 characters
The serial output messages are in the following format.
<STX><id><data><it><id><data><it>...<id><data><it><ETX>
<STX> .............................................. ASCII "start of text" character (1 byte, 02h)
<id> .................................................. item designator (1 byte, from following table)
<data> ............................................... item data (format listed in following table)
<it> ................................................... item terminator (1byte, 0Dh)
<ETX> ............................................. ASCII "end of text" character (1 byte, 03h)
Apollo SL50 / SL60 Installation Manual
I
ERIAL NTERFACE
Table 5 RS-232 Serial Interface Selections
RX/TX Comment
-- No input or output
TX Moving map data output
TX Moving map data output with SL40 comm data
RX/TX Used for factory test
UTPUT
Serial Interface Specifications
S
PECIFICATIONS
47