EtherCAT.Slave.ProcessData.Signal (ethercat v0.4.2)

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Declarative mapping of one logical process-data signal to a PDO or slice of a PDO.

A signal always belongs to exactly one PDO object (0x1600+ or 0x1A00+), as described by the slave's SII/ESI mapping. By default the signal spans the whole PDO. bit_offset and bit_size may be used to expose a smaller field inside that PDO when the driver knows the entry layout.

Summary

Types

t()

Functions

slice(pdo_index, bit_offset, bit_size)
whole_pdo(pdo_index)

Types

t()

@type t() :: %EtherCAT.Slave.ProcessData.Signal{
  bit_offset: non_neg_integer(),
  bit_size: pos_integer() | nil,
  pdo_index: non_neg_integer()
}

Functions

slice(pdo_index, bit_offset, bit_size)

@spec slice(non_neg_integer(), non_neg_integer(), pos_integer()) :: t()

whole_pdo(pdo_index)

@spec whole_pdo(non_neg_integer()) :: t()