CosDicEntry_s Struct Reference

Detailed Description

The structure CosDicEntry_s describes a single dictionary entry. Each entry is defined by the index, sub-index, access-attribute and data type. The pointer pvdValue points to the data of the specified object or a callback function.

Collaboration diagram for CosDicEntry_s:

Data Fields
uint16_t	uwIndex
uint8_t	ubSubIndex
uint8_t	ubAttribute
uint8_t	ubDataType
union {
}	tuValue

Field Documentation

[union]

union { ... } CosDicEntry_s::tuValue

Pointer to the actual value or SDO callback.

ubAttribute

uint8_t CosDicEntry_s::ubAttribute

The member attribute holds the access attribute defines in the enumeration CoAttr_e, the PDO mapping information and the object search method.

• Bit 0 .. Bit 3: object access (read/write/const)
• Bit 4: set to 1 means PDO mapping possible
• Bit 5: reserved
• Bit 6: reserved
• Bit 7: don't check sub-index for searching

ubDataType

uint8_t CosDicEntry_s::ubDataType

The data type may be one of the definitions made in the enumeration CoDT.

ubSubIndex

uint8_t CosDicEntry_s::ubSubIndex

The sub-index is a 8-bit value.

uwIndex

uint16_t CosDicEntry_s::uwIndex

The index is a 16 bit value. Possible values (according to the CANopen specification) are:

• 1000_h - 1FFF_h (CiA 301, CiA 1301, communication profile)
• 2000_h - 5FFF_h (CiA 301, CiA 1301, manufacturer specific)
• 6000_h - 9FFF_h (CiA 4xx, device profile, application profile)