User manual

3-F Reserved for Future use

Analog Input

0 CiPHR input voltage sense

1 Modem PCB temperature sense

2 AIN1

3 AIN2

4-F Reserved for Future use

Digital Output

0 DO1 (COM1/NO1)

1 DO2 (COM1/NO1)

2-F Reserved for Future use

c: NMEA-compliant alarm condition

A = Threshold exceeded (alarm is active)

V = Threshold not exceeded (indication of return to normal state)

s: NMEA-compliant alarm's acknowledge state

V = unacknowledged

ip: User-specified IP address (as configured via the Vanguard SC WEB pages)

uid: Free-form text unit identifier (8 characters max)

txt: Free-form alarm/indication text (20 characters max)

hh: NMEA-compliant checksum

Example: Report a temperature-back-in-range indication for the Cell module

$IIALR,135912.01,011,V,V,172.30.41.9;ADAM12;PCI TEMP NORMAL*FF<CR><LF>

Example: Report a "repeat: digital input #1" alarm

$IIALR,211545.22,101,A,V,172.30.41.9;ADAM12;MAN DOWN*FF<CR><LF>

Ack Message Format

$IIACK,xxx*hh<CR><LF>

xxx: ASCII-encoded hex target descriptor,

composed of three fields <F1><F2><F3>

<F1> Operation being performed

0 Acknowledging an alarm or opening a digital output

1 Closing a digital output

2 Read Request for an input (analog or digital)

3-F Reserved for future use

<F2> Class of I/O being operated on

0 Digital input

1 Analog input

2 Digital output (contact closure)

3-F Reserved for future use

<F3> I/O Channel number