E-VDT / WPAN Gateway Message Structure

The WPAN Gateway receives data from the E-VDT on a continual basis. The WPAN Gateway can report up to a maximum of 16 parameters by configuring each of the 4 $POBD messages to report 4 parameters each. Once configured via the AT^POBD{A…D} command the WPAN Gateway will respond with messages in the following format:

$PBOBDA,X, n1=a…a[,n2=b…b][,n3=c…c][,n4=d…d] *hh<CR><LF>
$PBOBDB,X, n1=a…a[,n2=b…b][,n3=c…c][,n4=d…d] *hh<CR><LF>
$PBOBDC,X, n1=a…a[,n2=b…b][,n3=c…c][,n4=d…d] *hh<CR><LF>
$PBOBDD,X, n1=a…a[,n2=b…b][,n3=c…c][,n4=d…d] *hh<CR><LF>

Where:
X is the validity flag (A= valid, V= invalid)
a…a,b…b, etc… is the parameter value information.

Example:
Configuration:
AT^POBDA=P1,P2,P3,P5

Query:
AT^SHOWPOBDA
Returned String:
$POBDA,A,p1=85,p2=1544,p3=50,0*74

If a parameter is not supported by the engine or vehicle, only commas will be displayed
$POBDA,A,,,p2=1544*19
The at^obdparam?pn command will always return a result in the form of

$PBOBDA,X, pn=a…a *hh<CR><LF>