PLC & HMI
PLC Indirect Addressing
We can very easily perform many operations such as creating an error routine with indirect addressing method in PLCs, recipe...
PLC Flip-Flop Example Code
If you are using Control Logix plc, we will make a flip-flop example with AOI. I will show you how...
Omron PLC CX-Programmer – I/O Table Creation
How easy it is to automatically create an i/o table in CX programmer the i/o table is a snapshot of...
How to download a program to plc, how to get the program from plc?
In order to upload a program to the PLC, you must first be able to connect to the PLC. If...
Plc Troubleshooting
Experience or knowledge is needed to troubleshoot plc issues. In order to find the errors on the machine, it is...
PLC Controller Firmware Upgrade
When you buy the plc CPU for the first time, you need to upgrade to the appropriate version for your...
Connect to PLC via USB cable
If the controller (usually 1756-L7x ControlLogix and over ) has a USB port that uses a Type B receptacle. The...
PLC First Scan Bit
What is First Scan Bit and How to create a tag? This bit is activated every time the PLC switches...
Siemens PLC Programming, S7-300 and S7-400 (SIMATIC S5) PLC
Communication Modules Communication modules provide data exchange between PLCs and input-output units or between other personal computers. These modules can...
How to get data from plc to excel
How to communicate with PLC via Excel? In order to get data from PLC with Excel, we need to use...
PLC Programming
The objectives of PLCtr are to provide practical instruction and help for anybody involved with PLCs from the maintenance staff to the PLC programmer. You don’t necessarily have to be a “writer” to contribute. If it has anything to do with any PLC and the devices connected to it then we are interested. If you want to become a writer, please write to us on the contact page. Join us.