tMbxHeaderControlUnion Union Reference

Union providing bit-field and raw access to the EtherCAT mailbox control word. More...

#include <packet-ecatmb.h>

Public Attributes
uint16_t	Control
struct {
uint16_t   Channel: 6
uint16_t   Priority: 2
uint16_t   Type: 4
uint16_t   Counter: 3
uint16_t   Unsupported: 1
}	v

Detailed Description

Union providing bit-field and raw access to the EtherCAT mailbox control word.

Member Data Documentation

Channel

uint16_t tMbxHeaderControlUnion::Channel

Optional communication channel index (default = 0).

Control

uint16_t tMbxHeaderControlUnion::Control

Raw 16-bit mailbox control word.

Counter

uint16_t tMbxHeaderControlUnion::Counter

Sequence counter for duplicate detection (0 = counter not used).

Priority

uint16_t tMbxHeaderControlUnion::Priority

Optional communication priority (default = 0; higher = more urgent).

Type

uint16_t tMbxHeaderControlUnion::Type

Mailbox protocol type; see ETHERCAT_MBOX_TYPE_* values.

Unsupported

uint16_t tMbxHeaderControlUnion::Unsupported

Set by the slave when the requested protocol is not supported.

[struct]

struct { ... } tMbxHeaderControlUnion::v

Structured bit-field access.

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The documentation for this union was generated from the following file:

• /builds/wireshark/wireshark/plugins/epan/ethercat/packet-ecatmb.h