Message Type 20, PIND

Proprietary NMEA message containing the digital state of the six inputs on the CTM-15x modem and a counter that keeps tracks of the number of times Input 1 has been triggered.

Message format is:

$PIND,abcdef,nnnnn*hh (CTM200r1)

$PIND,abcdefgh,nnnnn*hh (CTM200r2)

Where:

abcdef is the current digital state of inputs 1 through 6: 0 = low; 1 = high (CTM200r1)

abcdefgh is the current digital state of inputs 1 through 8: 0 = low; 1 = high (CTM200r2)

nnnnn is the counter for the number ticks from input 1; Counter max 65535; Max tick frequency is 40Hz
Note: This parameter is valid with power management microcontroller firmware revision r101 only. Contact Cypress Solutions for details.

hh is the message checksum

Example:

$PIND,000000,2*21