mm::etg::PrimitiveType Struct Reference

One primitive type: its ESI spelling and the CoE numbering it maps onto. More...

#include <esi_data_type.h>

Collaboration diagram for mm::etg::PrimitiveType:

Public Attributes
std::string_view	name
	Canonical ESI name (the base name for parameterised types).
uint16_t	code = 0
	ETG.1020 data type code.
uint16_t	bitSize = 0
	Bit width; 0 for types whose width comes from a parameter.
bool	isSigned = false
	True for two's-complement signed integers.

Detailed Description

One primitive type: its ESI spelling and the CoE numbering it maps onto.

ESI files name types with the IEC 61131-3 spellings (UDINT, USINT, REAL, STRING(50)), while the CoE wire and mm::node::decodeSdoBytes speak the ETG.1020 numbering whose symbolic names are different (UNSIGNED32, UNSIGNED8, REAL32, VISIBLE_STRING). This table is the bridge, and it is the whole reason mm::etg needs no dependency on mm::comm: the codes below are cross-checked against mm::comm::kObjectDataTypes but deliberately duplicated as literals, because linking mm::comm would drag SOEM into a pure XML parser and its tests.

Member Data Documentation

bitSize

uint16_t mm::etg::PrimitiveType::bitSize = 0

Bit width; 0 for types whose width comes from a parameter.

code

uint16_t mm::etg::PrimitiveType::code = 0

ETG.1020 data type code.

isSigned

bool mm::etg::PrimitiveType::isSigned = false

True for two's-complement signed integers.

name

std::string_view mm::etg::PrimitiveType::name

Canonical ESI name (the base name for parameterised types).

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

• libs/etg/esi_data_type.h