Attributes

Attributes

Symbol

BA_:

Typically located at the bottom of the document, after the messages and signals have been defined.

Syntax

BA_ "<AttributeName>" [BU_|BO_|SG_] [Node|CAN-ID] [Mnemonic] <Value>;

• BA_: The Attribute. Specifies type, NodeName/CAN-ID/SignalName, and value(s).
• AttributeName must have a corresponding definition to be considered valid (see below)

---

Differentiate: BA_, BA_DEF, BA_DEF_DEF?

Attributes can be specified for Nodes/Board Units (BU_), Messages (BO_), and Signals (SG_).

While the symbols are somewhat ambiguous, most attributes have 3 key parts.

---

Attribute Definitions (BA_DEF_)

BA_DEF_ [BU_|BO_|SG_] "<AttributeName>" <DataType> [Config];

• BA_DEF_: Attribute Definition. Specifies the type (BU_|BO_|SG_), name, data type, and value configuration.

DataType	Description	Config format
INT	integer	<min> <max>
FLOAT	floating point	<min> <max>
STRING	string
ENUM	enumeration	"<Value0>","<Value1>"...

Attribute Defaults (BA_DEF_DEF_)

BA_DEF_DEF_ "<AttributeName>" ["]<DefaultValue>["];

• BA_DEF_DEF_: Attribute Default Definition. Specifies the default value for the attribute if none is given.