Every PLC and HMI tutorial on plctr.com: project setup, ladder and structured text, communication, troubleshooting and commissioning, written from the plant floor.
In order to upload a program to the PLC, you must first be able to connect to the PLC. If you do not know how to connect to a PLC, I recommend you to read the article on how to connect to a PLC on our site. In this article, I will talk about how … Read more
Experience or knowledge is needed to troubleshoot plc issues. In order to find the errors on the machine, it is necessary to know the machine. There may be many reasons for fault diagnosis or breakdown in PLCs. You can use the diagnostic LEDs on the plc for errors or you can take advantage of the … Read more
When you buy the plc CPU for the first time, you need to upgrade to the appropriate version for your program. If your program is written with version 30, you need to upgrade your CPU to version 30. CPUs come as version 1 by default. You can easily upgrade the CPUs of PLCs with Firmware … Read more
If the controller (usually 1756-L7x ControlLogix and over ) has a USB port that uses a Type B receptacle. The port is USB2.0 compatible and runs at 12 Mbps. to use the USB port of the controller, you must have RSLinx® software, version 2.56 or later, installed on your workstation. Use a USB cable to … Read more
What is First Scan Bit and How to create a tag? This bit is activated every time the PLC switches to run mode, as the name suggests, the first scan bit. You don’t need to create any tags for the first scan bit. When we look at what we can use this bit for; Where … Read more
Communication Modules Communication modules provide data exchange between PLCs and input-output units or between other personal computers. These modules can be operated by direct connection (point to point) or over a network. In a one-to-one connection, the connected processor includes a dual interface. While one computer port is accessed by the programming device, communication is … Read more
How to communicate with PLC via Excel? In order to get data from PLC with Excel, we need to use OPC. If you are using Rockwell Allen-Bradley plc, no other tool is required for OPC because we can transfer data from Allen-Bradley PLCs via OPC with the RSlinx application. Note that the RSLinx application we … Read more
Function Blog Diagram, whose short name is FBD, is not a highly preferred type of PLC programming language, but it allows us to do even the longest operations in a short way in most places and is easy to interpret. Although Function Block Diagram type is not one of the most commonly used PLC programming … Read more
In HMI applications you create with Factorytalk site edition, the network-based distributed application; You can access the application you created using the factory talk client edition program from another computer. The only thing to note is that the client and the server must use the same network folders. If they are not using the same … Read more
Importing an Add-On Instruction Definition Perform this procedure when you want to use the definition for an Add-On Instruction that was exported from another Logix Designer application project. Once the project has the definition, you can use the instruction in your programs. Right-click on the Add-On Instruction folder and select Import Add-On Instruction from the … Read more
How to Create Add-On Instructions in Logix Designer One of the most powerful newer features of the RSLogix 5000 program is the ability to create Add-On Instructions, It is one of the features that makes the algorithm easy and enjoyable for plc programmers. How to create and use the Add-On instruction Now we will go … Read more
Safety Add-On Instructions Like standard Add-On Instructions, safety Add-On Instructions let you encapsulate commonly-used safety logic into a single instruction, making it modular and easier to reuse. In addition to the instruction signature used for high-integrity Add-On Instructions, safety Add-On Instructions feature a safety instruction signature ID for use in safety-related functions. Refer to the … Read more