Library.ReadSubDeviceRegister Method

Reads data from a SubDevice's register.

Namespace:  IntervalZero.MaxRT.Ecat.Api.NetApi
Assembly:  IntervalZero.MaxRT.Ecat (in IntervalZero.MaxRT.Ecat.dll) Version: 1.0.0.0 (File version: 1.1.0)

Syntax

Copy
public CommandStatus<byte[]> ReadSubDeviceRegister(
    EcatHandle subDevice,
    ushort offset,
    uint length
)

Parameters

subDevice

Type: EcatHandle
A handle to a SubDevice. To retrieve the corresponding handle, use OpenSubDeviceByIndex, OpenSubDeviceByStationAddress, or OpenSubDeviceByExplicitId.

offset

Type: UInt16
The offset within the SubDevice's register to start reading.

length

Type: UInt32
The length, in bytes, of the data to be read from the specified offset. The valid range is 1-512.

Return Value

This method returns a CommandStatus<byte[]> class. The read result is stored in property Value. If an error occurs, property State is set to ecatCommandError, and the error code is stored in property ErrorId.

Possible errors:

Error code Meaning

ecatErrNoError

The function succeeded.

ecatErrWrongParameter

One of the following conditions occurred:

  • Parameter subDevice is invalid.
  • Parameter length is 0 or greater than 512.

ecatErrMainDeviceNotReady

The MainDevice is not ready.

See Also: