DBC smartCORE module

Description

The dbc module provides a DBC parser via Fast Message Dispatcher. Data is extracted from a dispatched message and produced in corresponding channels.

In principle, the module can be operated with any Fast Message Dispatcher. This is useful in the context of CAN bus

• the (generic) CAN bus socket module ("canbus")

Interfaces & protocols used

• CAN bus DBC (CAN DBC)
• Fast Message Dispatching

JSON configuration

The following section describes the entire JSON configuration of the module and explains the individual parameters.

Example configuration (minimum)

    {
      "module": "DBC1",
      "factory": "dbc",
      "config":{
        "fmd": "CANBus1",
        "dbcFileContents":"<BASE 64 coded content of the CAN DBC file>"
      }
    },

Example configuration (maximum)

    {
      "module": "DBC1",
      "factory": "dbc",
      "config":{
        "fmd": "CANBus1",
        "bufferSize":1024,
        "dbcFileContents":"<BASE 64 coded content of the CAN DBC file>",
        "dbcParserDebugOutput":true,
        "namespace":["directory", "subDirectory"],
        "channelPrefix": "CAN1__",
        "produceOnChangeOnly":true,
        "separateEFFlag":false
      }
    },

Parameter list

Parameter name	Required	Data type	Meaningful value range	Default	Description
fmd	YES	STRING			Fast Message Dispatcher Name (e.g. "CANBus1")
bufferSize	No	INT	1 -	1024	Buffer size of the channels to be produced
dbcFileContents	YES	STRING			Base 64 coded content of the CAN DBC file
dbcParserDebugOutput	No	BOOL	false, true	false	Flag for activating additional debug information of the DBC parser
channelPrefix	No	STRING			Channel prefix (useful if several DBC modules are used and the DBC files have overlapping channel names)
namespace	No	ARRAY [ STRING ]			Channel prefix in the form of hierarchically linked namespaces
produceOnChangeOnly	No	BOOL	true, false	true	production only on value change
absoluteTolerance	No	FLOAT	0.0 -	0.0	Tolerance threshold regarding detection of a value change
doubleChannels	No	ARRAY [ STRING ]	[]		List of channels to be created as double precision channels
separateEFFlag	No	bool		false	Should a distinction be made between "Extended IDs" (29 bits) and standard IDs (11 bits) or not. If false, no distinction is made and the EFF flag is removed from the message ID.

Module information

Information	Value
Author	optiMEAS Measurement and Automation Systems GmbH
since smartCORE	0.120
Module type	Receiver (Producer)
Dependencies	any Fast Message Dispatcher module (e.g. "canbus", "fmudp")