EL6751- Emergency messages

The EL6751 stores incoming emergency messages in the diagnostic area from offset 26 (see below). Up to 10 emergencies can be stored for each bus node. The oldest message is replaced if more emergencies than this arrive.

New diagnostic data (emergencies or other diagnostic data) is present as soon as the DiagFlag is set.

CANopen emergencies and other diagnostic data can be read via ADS. You need to enter the EL6751 ADS net ID. Other ADS parameters:

Port: 200

IndexGroup: Lo-Word = 0xF180, Hi-Word = Node-Number.

IndexOffset: See below

Length: See below

If more than 26 bytes of diagnostic data have been read out the emergency memory is reset. The DiagFlag is reset as soon as at least 108 bytes have been read starting from offset 0. Alternatively, the flag is reset after each of read access, if IndexGroup 0xF181 (instead of 0xF180) is used for the read.

A description of the diagnostic data at offset 0...23 is to be found in the corresponding Section. The diagnostic area starting at offset 24 is organized as follows:

Offset 24-25: Number of consecutive emergencies

Offset 26 - n: Emergencies (8 bytes each)

The significance of the emergency data is to be found in the technical documentation for the particular CANopen device.