EasyModbusTCP.NET

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ModbusClient.Available() Has memory leak

2

Every time the Available() method is called the program uses about another 100k or RAM.

3D-Lasers-Lab

When the slave machine continuously receives incorrect response and CRC check fails, the stack overflow will occur in an infinite loop ` if (receivedUnitIdentifier != this.unitIdentifier) data = new byte[2100];...

541728305

Based on the specification described in this [link](https://modbus.org/docs/MB-TCP-Security-v21_2018-07-24.pdf), I have tried to implement the features that will provide a security-focused variant of the Modbus/TCP protocol by utilizing the Transport Layer...

georgemakrakis

[Issue] System.UnauthorizedAccessException

4

Hi! I've been using the library in a project. I'm connecting to Modbus RTU flow meters. First I designed the app for one type of them. Now I'm adding a...

NintendoPlayer

Network Stream

10

If connected with TCP/IP, the connection aborted if there is no poll for sometime with server. It end up with below exception: At this line: stream.Write(data, 0, data.Length-2); System.Net.Sockets.SocketException :...

harjitsinghhpk

Serial Port Parity

1

Using an empty constructor to generate a ModbusClient, then setting its properties. Setting `ModbusClient.Parity = Parity.None;` before calling `.Connect()` results in the internal serialport still creating with `Parity.Even`

wecoxSand

Isn't ModbusClient thread safe?(ModbusClient 不是线程安全的吗？)

1

我将ModbusClient 用于多线程环境的时候，调用ModbusClient 的ReadHoldingRegisters 方法时，获取到的值有时候是错误的。 (en:When I use ModbusClient in a multi-threaded environment, I sometimes get the wrong value by calling ModbusClient's ReadHoldingRegisters method.) 错误的(The wrong)：    正确的(The correct)：...

jkh404

[BUG]ModbusClinet.ReadHoldingRegisters Throw NullReferenceException(在我的程序具有重连功能时引发的异常)

1

 上面的图片是Visual Studio2019 Debug 调试运行时抛出的异常。出现的位置是EasyModbusTCP.NET项目的ModbusClient.cs的ReadHoldingRegisters 方法 注意：这个 BUG是偶尔发生的，按照以下说明操作可以大概率重现。 情景重现： 我的程序是具有掉线重连功能的，每隔一秒会检查是否断开连接，如果断开连接则调用 Connect() 重新连接。  当我启动我的程序，然后再`立刻`启动ModBus Tcp Server 监听端口，最后抛出了异常。 en: Visual Studio2019 Debug debuts an exception thrown at runtime. The location where...

jkh404

When the server is actively disconnected(当服务器端主动断开时)

2

我用的EasyModbusTCP.NET v5.6 当TCP服务器断开连接时，客户端并不能获取到反馈，依然能够读取和写入(显然这是错误的)。 不过，我查看EasyModbusTCP.NET 项目的 ModbusClient.cs 源代码后， 将Connected的代码改为以下代码即可得到正确的反馈。 ``` c# public bool Connected { get{ if (serialport != null) { return (serialport.IsOpen); } if (udpFlag & tcpClient != null) return...

jkh404

Type of EasyModbus.ModbusServer.HoldingRegisters.localArray is not suitable

3

public short[] localArray defined in EasyModbus.ModbusServer.HoldingRegisters, which is not suitable defined as a short[] type because sometimes we need to write a value bigger than 32767 (UInt16) to a single...

aigefjk