PeerSdoAccessException Class¶

An SDO client upload or download was refused locally, before any frame was sent, because the (index, sub-index) is not one this node may transfer to that server.

public sealed class PeerSdoAccessException : System.InvalidOperationException

Inheritance Object → Exception → SystemException → InvalidOperationException → PeerSdoAccessException

Remarks¶

A peer EDS or DCF bound with BindPeerDeviceDescription(byte, CanOpenDeviceDescription) is the list of objects the client may touch on that node. A pair the file does not declare is refused, including 1000h, 1001h and 1018h when the file leaves them out.

With no description bound, only the CiA 301 mandatory base objects are transferred (IsAllowedWithoutPeerDescription(ushort, byte)): 1000h:00 device type, 1001h:00 error register, and the whole identity object 1018h:00–04 (highest sub-index, vendor-id, product code, revision, serial number). Anything past 1018h:04, and any optional object such as 1003h, stays blocked until a peer file is bound.

Constructors¶

PeerSdoAccessException(byte, ushort, byte, bool, string) Constructor¶

Constructs the exception for one refused transfer.

public PeerSdoAccessException(byte serverNodeId, ushort index, byte subindex, bool peerDescriptionLoaded, string message);

Parameters¶

serverNodeId Byte

index UInt16

subindex Byte

peerDescriptionLoaded Boolean

message String

Properties¶

PeerSdoAccessException.Index Property¶

Object index.

public ushort Index { get; }

Property Value¶

UInt16

PeerSdoAccessException.PeerDescriptionLoaded Property¶

true when a peer description was bound for ServerNodeId and the pair is absent from it; false when nothing was bound and the pair is not one of IsAllowedWithoutPeerDescription(ushort, byte).

public bool PeerDescriptionLoaded { get; }

Property Value¶

Boolean

PeerSdoAccessException.ServerNodeId Property¶

The server node-id the transfer addressed.

public byte ServerNodeId { get; }

Property Value¶

Byte

PeerSdoAccessException.Subindex Property¶

Sub-index.

public byte Subindex { get; }

Property Value¶

Byte

Methods¶

PeerSdoAccessException.IsAllowedWithoutPeerDescription(ushort, byte) Method¶

Whether an SDO to this pair may proceed when no peer EDS or DCF is bound for the server.

public static bool IsAllowedWithoutPeerDescription(ushort index, byte subindex);

Parameters¶

index UInt16

subindex Byte

Returns¶

Boolean

Remarks¶

1000h and 1001h at sub-index 0, and 1018h at sub-indices 00h through 04h. 1018h:05 and above, 1003h, and every other index are not included.