Further signal attributes

The networks, nodes, messages and signals defined in a DBC file can possess additional attributes. Some of these attributes are evaluated by the supplement during the import. These are:

Object type

Attribute

Application

Network

ProtocolType

BusType

Further signal attributes 1:

The Prepared DBC Signals module additionally contains these variables:

  • ProtocolType = 1, the imported DBC file describes a J1939 network
  • ProtocolType = 0, the protocol is not defined in detail
  • BusType = 1, the bus described is a CAN bus
  • If BusType = 0, the bus type is not described in detail

Message

VFrameFormat

Further signal attributes 2:

Used to distinguish between

  • standard CAN frames (11-bit ID) and
  • extended frames (29-bit ID)
  • as well as J1939PG messages.

 

GenMsgDelayTime

GenMsgCycleTime

GenMsgSendType

Further signal attributes 3:

If a message is marked as "cyclic", then the GenMsgCycleTime is adopted as the Event Time in the PDO settings. The frame is thus cyclically transmitted.

The value of GenMsgDelayTime is adopted as the Inhibit Time.

Signal

GenSigStartValue

The value specified under GenSigStartValue is used as the starting value (default value) of the signal.