Increasing Data is needed for some car equipment.
The Idle Message data indicated by Increasing Data Index is increased by Increment every time the Idle Message is sent.
Increment can be -128 ~ 127.
If Increasing Data is not used, set 0 at Increasing Data Index.

Example:
Idle message is
Dur:100 Len: 4 sID:01 dID:50 Data:AB CD
Increasing Data Index is 2
Increment is 1.
The data is sent like below every 1 second to the Radio though BSGd.
Len: 4 sID:1 dID:50 Data:AB 16
Len: 4 sID:1 dID:50 Data:AB 17
Len: 4 sID:1 dID:50 Data:AB 18
Len: 4 sID:1 dID:50 Data:AB 19
Len: 4 sID:1 dID:50 Data:AB 1A
….

 

You can see the sent Idle Message at Button Property with
checking Show sent IBUS message.