Vanguard 3000 Multicarrier Cellular Data Modem & IP Router PN 134732-VG3000 Rev. D| Page 109
$IIALR ... $IIALR ... $IIALR ... $GPMRC ... $GPVTG
6.6
PDU TYPES
Note: In all the examples provided below, for clarity the checksum is replaced by the value “FF.”
ACK Message
I/O value read request (manager --> Vanguard 3000)
Output line setting request (manager --> Vanguard 3000)
Alarm acknowledgement (manager --> Vanguard 3000)
$IIACK,xxx*hh<CR><LF>
xxx:
ASCII-encoded hex target descriptor,
composed of three fields <F1><F2><F3>
<F1> Operation being performed
0
Acknowledge an alarm or opening a digital output
1
Close a digital output
2
Read an analog or digital input
3-F
Reserved for future use
<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
2
AIN1
3
AIN2
4-F
Reserved for future use
Digital Output (when <F2> is 2)
0
DO1 (COM1/NO1)
