All brands of PLCs have self-diagnostic functions, but the skill in PLC repair lies in fully utilizing this function for analysis and accurately identifying the problem. Here are eight common error types that PLC repair personnel need to understand when the PLC presents abnormal alarms. 01Abnormal CPU When an abnormal CPU alarm occurs, check all … Read more
Bus drivers play a crucial role in industrial automation control systems, and their zero return function is a core aspect of ensuring equipment positioning accuracy. However, in practical applications, the issue of the zero return axis not moving occurs frequently, which not only affects production efficiency but may also pose safety risks. This article will … Read more
▌AbstractThis article discusses the definition of EMC, testing methods for EMC in microcontroller application systems, the application of new devices and materials for EMC, and troubleshooting techniques. Anyone involved in the research, development, production, or supply of electronic products must conduct EMC electromagnetic compatibility testing.▌IntroductionElectromagnetic Compatibility (EMC) refers to the ability of a device or … Read more
Abstract: PLC system failures can lead to significant losses. Rapidly locating and resolving issues is a core competency for engineers. This article systematically introduces practical tools such as LED status light diagnostics, online diagnostics, and Trace tracking functions using Siemens S7-1200/1500 PLC and TIA Portal as examples, establishing an efficient fault troubleshooting methodology. No matter … Read more
-Begin-Hello everyone! I am Engineer Fu. Whether learning about host computers or PLCs, one topic seems unavoidable—communication. PLC communication focuses more on application; it only requires calling the corresponding function blocks and filling in the correct parameters, without needing to understand the underlying implementation principles. Host computer communication emphasizes the underlying principles, requiring knowledge of … Read more
📌 Don’t underestimate this command with just 5 letters; it is the first step in getting to know your Linux system. 1. Applicable Scenarios: When Do You Need It? • ✅ Quickly confirm system type: Is it Linux? macOS? Or another Unix? • ✅ Script cross-platform compatibility check: Determine the runtime environment at the beginning … Read more
“Do I need to pay for a public IP for my device?” Recently, we have received many similar inquiries. As a primary agent for the three major telecom operators for over 10 years, FIFISIM IoT will clarify in simple terms: the cost of applying for a public IP for IoT devices, along with three common … Read more
Introduction: Receiving an alert in the middle of the night, and upon checking, it’s the familiar 502 Bad Gateway? Don’t panic, this isn’t the server’s death sentence, but rather a distress signal sent to you! Today, we will translate this “Morse code” into plain language, along with a checklist that you can use immediately, helping … Read more
Lost in Linux event logs? This guide helps you decode, filter, and troubleshoot like a pro—no more despairing at endless logs! Hello Gophers, I am gogogo, welcome to follow me. If your Linux system is acting up and you don’t know why, the logs can tell you where the problem lies. This guide covers the … Read more
In the field of operations automation, Ansible has become a powerful tool for bulk service deployment due to its agentless architecture, declarative syntax, and rich modules. However, even experienced operations personnel often stumble over seemingly simple details during actual operations. This article, based on over 200 production environment deployment experiences in the past three years, … Read more