The Modicon M262 schneider electric PLC

C#编写的自动查找USB HID设备并传输数据,运行自动枚举全部USB HID 设备,从列表中选择并点击连接即可接收数据到PC端,支持win10系统,已测试。部分源码:       /// /// 获取所有连接HID的设备 /// /// 返回所有连接HID的设备 private void GetDeviceList(ref List deviceList) { Guid HIDGuid = Guid.Empty; windowsApi.GetDeviceGuid(ref HIDGuid);//获取HID的全局GUID IntPtr HIDInfoSet = windowsApi.GetClassDevOfHandle(HIDGuid);//获取包含所有HID接口信息集合的句柄   if (HIDInfoSet != IntPtr.Zero) { SP_DEVICE_INTERFACE_DATA interfaceInfo = new SP_DEVICE_INTERFACE_DATA(); interfaceInfo.cbSize = Marshal.SizeOf(interfaceInfo);   //检测集合的每个接口 for (uint index = 0; index

The Schneider Electric Modicon M580 range of programmable controllers

The Schneider Electric Modicon M580 ePAC range of programmable controllers natively includes advanced security functions to protect critical processes from cyber attacks. Access security: > Processor, communications, memory, operating modes. System hardening: > Integrity control, management of unused services. Modicon M580 Traceability of security events: > Detection of intrusion and corruption attempts, event logging (Syslog). … Read more

The Differences Between PLCs and RTUs

plc

Despite the many overlaps, PLCs and RTUs are two different devices, each with specific suitable applications. The convergence between programmable logic controllers (PLCs) and remote terminal units (RTUs) is relatively new. In terms of the installed base, PLCs have long overtaken RTUs and have been dominating the market for decades, practically becoming commodities. Driven by this growth, many vendors … Read more

Boolean Logic for Ladder Diagrams

Ladder diagrams, or ladder logic, is a popular programming language used for PLCs. Programmers can utilize boolean logic as a base for their ladder diagrams. Learn the basics and structures for boolean logic. Every device controlled by a central processing unit (CPU) understands instructions in the form of 1’s and 0’s. This statement is commonly … Read more

Comparing Programming Languages: Structured Text vs. Ladder Logic

Structured text and ladder logic are fairly common yet visually different languages PLCs can utilize. How do you choose the best language for your application? The modern programmable logic controller (PLC) can utilize many programming languages within the IEC 61131-3 standard. Two of the most common are ladder logic and structured text. Let’s examine each of these languages, … Read more

PLC Overview

What do the individual work mean ? IT may make more sense to look at the work in reverse order. PLC Controller – This is the keyword A PLC monitors various Conditions, and based on these conditions, it determines an outcome. in other word it has the ability to control the outcome based on the status of … Read more

PLC History

Although PLC evolved concurrently by different  by different organization, it is recognized as first being introduced by Bedford Associated in 1968. it was the product of choice to meet Gm’s Hydra-matic Division’s specifications. as a Replacement for traditional relay- based machine control systems. the modicon as it was called being an electronic device , also reduced wiring and … Read more

PLC (Programmable Logic Controller) Uses

PLC Uses : Most Likely you encounter PLC Based Control every day without even realizing it where ? In simple applications Such as Car Washes Elevators, even more complex application such as. Elevators Car Washes Parks Industrial Water and waste water Treatment Plants Manufacturing Assembly Lines Machinery Assemble Lines, Machining Bottling Lines and More. The … Read more

What is PLC (Programmable logic controller) ?

A Programmable Logic Controller, or PLC, is a ruggedized computer used for industrial automation. These controllers can automate a specific process, machine function, or even an entire production line. Definition of PLC: A PLC can be define as an industrialized computer that includes the Hardware and software required to automatically control production equipment, machines processes … Read more