Wavetronix SmartSensor Advance Extended Range (SS-200E) - User Guide - Manual (Page 114)

CHAPTER 9 • SETUP OUTPUT COMMUNICATIONS 113
Note
Wavetronix Engineering Note EN0018 provides information on how to parse a trigger
speed data message. This message has now been modified to include the 6-charac-
ter tag after speed bytes (but before the terminator sequence). So now the trigger
speed data message is 13-bytes instead of 7 bytes long. By default the 6-byte multi-
drop prefix (which contains a sensors ID) is pre-pended to the 13-bytes of the trigger
speed data message. The sensor ID and the 6-byte tag can be used to identify which
speeds correspond to which intersection approach. Additionally, the last three bytes
of the trigger speed data message are a terminator sequence that can be used by a
terminal server to prompt forwarding of the message. In C-style programming nota-
tion the terminator sequence is “~\r\r” which corresponds to “7E 0D 0D” in binary
hexadecimal notation.
Note
It is possible to suppress the 6-character tag by entering the first character as a “!”.