PDComm.Secs1Message

Class

A SECS-I message: block header identity plus the message body.

public sealed record Secs1Message

Parameters

Name	Description
DeviceId	The device ID (0 to 32767).
Direction	The direction bit of the message.
Stream	The SECS-II stream number (0 to 127).
Function	The SECS-II function number.
ReplyExpected	Whether the W bit is set, meaning the sender expects a reply.
SystemBytes	The system bytes (transaction ID); the application chooses them for its own messages.
Body	The message text, normally one encoded SECS-II item; split into blocks of up to 244 bytes on the wire. May be empty.

Members

Secs1Message

Constructor

A SECS-I message: block header identity plus the message body.

public Secs1Message(ushort DeviceId, Secs1Direction Direction, byte Stream, byte Function, bool ReplyExpected, uint SystemBytes, ReadOnlyMemory<byte> Body)

Parameters

Name	Description
DeviceId	The device ID (0 to 32767).
Direction	The direction bit of the message.
Stream	The SECS-II stream number (0 to 127).
Function	The SECS-II function number.
ReplyExpected	Whether the W bit is set, meaning the sender expects a reply.
SystemBytes	The system bytes (transaction ID); the application chooses them for its own messages.
Body	The message text, normally one encoded SECS-II item; split into blocks of up to 244 bytes on the wire. May be empty.

Body

Property

The message text, normally one encoded SECS-II item; split into blocks of up to 244 bytes on the wire. May be empty.

public ReadOnlyMemory<byte> Body { get; init; }

DeviceId

Property

The device ID (0 to 32767).

public ushort DeviceId { get; init; }

Direction

Property

The direction bit of the message.

public Secs1Direction Direction { get; init; }

Function

Property

The SECS-II function number.

public byte Function { get; init; }

ReplyExpected

Property

Whether the W bit is set, meaning the sender expects a reply.

public bool ReplyExpected { get; init; }

Stream

Property

The SECS-II stream number (0 to 127).

public byte Stream { get; init; }

SystemBytes

Property

The system bytes (transaction ID); the application chooses them for its own messages.

public uint SystemBytes { get; init; }