MemoryAccess Class

Access to PLC memory. May implement INotifyDataChanged, depending on the service.

Inheritance Hierarchy

SystemObject
Demo3D.PLC.Comms.MemoryMemoryAccess

Namespace: Demo3D.PLC.Comms.Memory
Assembly: PLC (in PLC.dll) Version: 15.0.2.11458

Syntax

public abstract class MemoryAccess : IDisposable

The MemoryAccess type exposes the following members.

Constructors

	Name	Description
	MemoryAccess(IMemoryService, MemoryAddress, AccessParameters, AccessParameters, Object)	Constructs a new MemoryAccess.
	MemoryAccess(IMemoryService, MemoryAddress, MemoryAddress, MemoryAddress, AccessParameters, AccessParameters, Object)	Constructs a new MemoryAccess.

Properties

	Name	Description
	AccessRights	The requested access rights.
	Address	The address.
	AddressSpace	The memory address space.
	PreferredAddress	Preferred access to the address space. The underlying protocol may prefer the user to access more data than addressed.
	PreferredParameters	Preferred access parameters.
	RequestedParameters	User requested access parameters.
	RequiredAddress	Required access to the address space for this address. The underlying protocol may require the user to access more data than addressed.
	UserState	Private user data passed in to GetAddress.

Methods

	Name	Description
	Dispose	Called to indicate that memory access is no longer required.
	GetPreferredAddress	Returns the preferred access to the address space. The underlying protocol may prefer the user to access more data than addressed.
	GetRequiredAddress	Returns the required access to the address space. The underlying protocol may require the user to access more data than addressed.
	Read(AccessParameters, IOErrorHandler, Object, Signal)	Block read data from the peer.
	Read(Buffer, MemoryAddress, AccessParameters, IOErrorHandler, Object, Signal)	Block read data from the peer.
	ReadAsync(Boolean, AccessParameters, IOErrorHandler, Object, Signal)	Block read data from the peer.
	ReadAsync(Boolean, Buffer, MemoryAddress, AccessParameters, IOErrorHandler, Object, Signal)	Block read data from the peer.
	ToString	Returns a string representation of the memory access. (Overrides ObjectToString.)
	Write	Block write data to the peer.
	WriteAsync	Block write data to the peer.