PLC是Programmable Logic Controller的缩写，就是可编程逻辑控制器。这个提示是指你的西门子工业控制编程无法跟可编程逻辑控制器（Device）连接上。查查看连接，或者重起系统看看。不然的话就要查看程序支持你的Device了。
The Web services model is great for connecting devices because it supports a full range of device and service interactions that may not be fully known at the time we create an application. On the device side, we use a subset of the full Web service infr...
As long as the hardware device has a Windows-supported cryptographic service provider (CSP) you can access the data stored on it using the Certificate Store API.The certificate store is buried deep in the user profile. This allows use of ACLs on the keys for a specifi...
For most objects this works great. However, for objects that keep system resources as part of their internal state (such as file handles or sockets), relying on garbage collection is not an option. A high-performance, scalable application must ask objects to free these resources as soon as ...
but what is persisted is updated on disk as soon as it changes to ensure it will be available on reboot. The parameter values are not persisted: on reboot they are set to the unknown state until the device sourcing them comes up and provides good data. The machine must know how far alo...
On Windows,DirectX 12.0 Runtimeis automatically included with the operating system, assuming that you have updated Windows to the most recent version. However, to support the new DirectX APIs, your GPU card must also be compatible. To check which version of DirectX your operating system supports...
Argument 'Length' must be greater or equal to zero. Array of labels Arrays - Finding Highest and Lowest Values in an array asenumerable is not a member of system.data.datatable Asign an array to a Combobox.Items --VB.NET Assign 'Enter' key to a button? Assign DBNull.Value to a va...
device to a SEGGER J-Link compatible device which can be used with their software. This is the recommended debugging option because this same setup can be used should you decide to migrate your project to a professional level. In this step, the debugging software ...
awesome-static-analysis - static analysis tools for all programming languages. computer-science - path to a free self-taught education in Computer Science. post-mortems - is a collection of postmortems (config errors, hardware failures, and more). build-your-own-x - build your own (insert tec...
thrust::device_vector<double> d_vec = h_vec; double x = thrust::reduce(d_vec.begin(), d_vec.end(), 0, thrust::plus<int>()); } See it on Godbolt This example show how to perform such a reduction asynchronously: #include <thrust/host_vector.h> #include <thrust/device_vector....