Index
134 025-9567E
ASCII Control Character Usage
CR (carriage return)
< hex 0D >
Sent from computer to encoder. Starts the encoder calling
sequence when preceded by four valid ASCII decimal
characters, OR used to cause encoder to force transmission
over a busy channel.
NAK (negative ack)
< hex 15 >
Sent from encoder to computer. Signifies that the attempted
calling sequence cannot be sent because the instant call stack
has not been programmed.
When encoder sends NAK it is again idle and can accept the
next calling instruction from the computer.
BEL (bell)
< hex 07 >
From encoder to computer. Signifies that the channel of the
individual call is busy. BEL will be sent every second until
channel becomes clear or until 30 seconds elapse after which
time EOT will be sent.
EOT (end of trans)
< hex 04 >
Sent from encoder to computer. Signifies that the attempted
individual call timed out on a channel busy condition.
ACK (acknowledge)
< hex 06 >
Sent from encoder to computer. Signifies that the attempted
instant call stack has completed its calling sequence. This
does not mean that each call was sent; some could have
busied out.
When encoder sends ACK it is again idle and can accept the
next calling instruction from the computer.
* (asterisk)
< hex 2A >
Sent from computer to encoder. This clears any previous
information entered either from keypad or computer. This will
not interrupt an instant call stack already in progress. The
encoder will not respond back to the computer to indicate
completion of the clearing. The clearing may take up to one
second during which time encoder will not accept another
character.
Suggested Remote Control Parameter Programming
Parameter Recommended Setting
Baud rate 4800 baud provides the fastest response
New-line nulls Zero (0) nulls per new line gives fastest response
Bell use Output without bell characters will speed response
CTS monitor The encoder CTS should be ignored
CTS polarity Since CTS is ignored, either polarity can be used
Call logging
The descriptions in this appendix only hold true if call
logging has been disabled. If enabled, the CAD
program will have much more encoder-generated text
to search through.
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