Click on “ Jicheng Training ” above, select “Pin to Top” 160,000+ industrial control professionals follow this WeChat platform: technical sharing, learning exchange, industrial control videos In the Omron PLC system, the units occupy different addresses in the CIO area according to their front and back positions or special characteristics. Understanding address allocation and knowing … Read more
Main Content: Mapping of Physical Memory and Virtual Memory Initialization of Physical Memory at Boot Time Buddy System for Allocating Physical Memory Pages SLAB Allocator for Allocating Physical Memory Blocks vmalloc for Allocating Virtual Memory Pages mmap Memory Mapping Principles malloc for Dynamic Memory Allocation Page Fault Interrupts
OCA optical adhesive is the “invisible link” in the electronic display industry, ensuring the thinness, high brightness, and reliability of modern screens through exceptional optical performance and stable adhesion.With the popularity of foldable screens and large in-car displays, the technology is upgrading towards flexibility and ultra-thinness. The domestic substitution process (such as Zhongjiu Guofeng and … Read more
It’s unbelievable, I see someone asking about PLC address allocation again. It’s already 2024, and people are still struggling with this issue, which is a common problem for field electricians. What is there to discuss? Alright, for the sake of all the newcomers, I will talk about it today to save you from stepping into … Read more
Last week, I went to a paper mill to troubleshoot, and the site was a complete mess. Their PLC programmer seemed to be a recent graduate, and the address allocation was a total disaster. I/O addresses were all over the place, and variable names were just a1, a2, b1, b2, it made my head hurt! … Read more