Specifications

Open CTM (Revision D)

154

Report Messages

NMEA 0183 v3.0:

$GPGLL,4915.3920,N,12259.8072,W,222414.00,A,A*79

9.3 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

Where:

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

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

9.4 Message Type 21 to 26, PINA

Proprietary NMEA message containing the analog state of the specified input on the CTM-15x modem.

Message format is:

$PINA,n,x.xx*hh

Where:

n is the analog input number with range 1 through 6.

x.xx is the current analog value of input n in volts

hh is the message checksum

Example:

$PINA,1,0.00*39

$PINA,2,0.00*3A