You can read about CW_CAN_R in ME7 Funktionsrahmen. It is not only about ABS/ASR/ESP - it is about CAN communication in general (you should read about all CW_CAN_* parameters).
¨Uber das Codewort CW_CAN_R festgelegt, welche Botschaft empfangen werden soll.
+----------------------------------------------------------------------------+
CW_CAN_R Bit | 15| 14| 13| 12| 11| 10| 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+----------------------------------------------------------------------------+
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | +--------- Botschaft Getriebe 1
| | | | | | | | | | | | | | +------------- Botschaft Getriebe 2
| | | | | | | | | | | | | +----------------- Botschaft Bremse 1
| | | | | | | | | | | | +--------------------- Botschaft Airbag
| | | | | | | | | | | +------------------------- Botschaft LWS
| | | | | | | | | | +----------------------------- Kombi 1, 2 ,3
| | | | | | | | | +--------------------------------- Botschaft Allrad 1
| | | | | | | | +------------------------------------- Botschaft Bremse 3
| | | | | | | +----------------------------------------- Botschaft Niveau 1
| | | | | | +--------------------------------------------- Botschaft Clima 1
| | | | | +------------------------------------------------ Botschaft Fahrwerk
| | | | +---------------------------------------------------- Botschaft ZAS
| | | +-------------------------------------------------------- BSG_Last
| | +------------------------------------------------------------ % CANSEN
+---+---------------------------------------------------------------- nicht belegt
Bit = 1 -> Empfang, Bit = 0 -> kein Empfang und keine Timeout-¨Uberwachung
Could you explain what exactly is your problem with axis?