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3.4. Alarm message sent via RS232
The EverPlex 4CQ will send out alarm message thru RS232 when any alarm occurs, the
alarm message format are three ASCII characters followed carriage return and line feed, they are
The first character is the leading code ,
'!'
The second character is the alarm type, 'S' indicates a sensor alarm, 'V' indicates a video loss
The third character is the channel number having the alarm,
'1' ~ ’4'
The fourth byte is the carriage return code, 0DH
The fifth byte is the line feed code, 0AH
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