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1
DO2 (COM1/NO1)
2-F
Reserved for Future use
hh:
NMEA-compliant checksum
Example: Acknowledge a "Cell module temperature out of range" alarm
$IIACK,011,*FF<CR><LF>
Response to I/O read request (manager <-- Vanguard 3000)
Response to output line state setting request (manager <-- Vanguard 3000)
$IIXDR,t,x.x,u,ioid;ip*hh <CR><LF>
t:
NMEA-compliant I/O type
C
temperature
U
Voltage (AIN1..4, Vanguard 3000 input voltage sense)
S
switch or valve
--- other NMEA types are not used at this time ---
x.x
NMEA-compliant free-form integer or floating-point value.
As per NMEA0183, digital I/O values are:
0 = OFF/OPEN
1 = ON/CLOSED
u:
NMEA-compliant unit of measurement
C = degrees Celsius
V = Volts
ioid:
I/O Identifier composed of <F2><F3>
<F2> Class of I/O being operated on
0
Digital input
1
Analog input
2-F
Reserved for future use
<F3> I/O Channel number
Digital inputs (when <F2> is 0)
0
Ignition sense
1
DIN1
2
DIN2
3-F
Reserved for future use
Analog Input (when <F2> is 1)
0
Vanguard 3000 input voltage sense
1
Board/Cell module temperature sense
(Cell, PCI module temperature sense)
(digital I/O, ignition sense)
Vanguard 3000 Multicarrier Cellular Data Modem & IP Router PN 134732-VG3000 Rev. D| Page 110
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