User`s manual

4. Please note that the 9000 may communicate at many different baud
rates. To initialize at the new baud rate, send the 9000 a break signal
(set the output data line on your computer to + 12 volts) for 100
milliseconds, set the break to normal again (–12 volts). Wait for more
than 1 millisecond, then send an 80H character to the 9000 at the
new baud rate. The 9000 will begin reissuing the prompter in
response to the space or return command when locked on again.
send character
is char > ?
is char * ?
receive character
get character
send character
get character
end
open file
start
display character
receive character
No, not an asterisk
display character
display character
Yes, char is an asterisk
No, char is not eof
Yes, char is eof
is char = eof?
char is not > or is eof
No, char is not a >
Yes, char= >
Figure 5.1
Flowchart showing a
programming example.
Chapter 5 Interfacing Notes Model 9000
Page 22