CAT 3208 monitoring

[Ray Davis]

There is PID 254, which is a data link escape. The spec says: This PID allow transmission of information on the data bus in a nonstandard way (per the protocol outlined in SAE J1587) but specific electronic module vendor's proprietary fashion. The intent of this PID is to allow a means to use the data bus for vendor specific transmissions that do not benefit the general purpose nature of the communications data link.

I have seen this particular PID go by a lot, and in looking at it, it appears it is data intended for my DDEC Pro Driver module (in the case where I've seen this particular message).