What is the DDE Protocol?
Dynamic Data Exchange (DDE) Protocol is an interprocess communication system that allows data to be communicated or shared between the devices.
LIFO Instruction in PLC
LIFO instruction used in the PLC programming applications that require to store the sequence of data in order and unload it.
Types of Allen Bradley PLC
In this article, I will discuss the types of Allen Bradley PLC, which are PLC 5, SLC 500, CompactLogix, ControlLogix, and MicroLogix.
Test and Process Modes in Siemens PLC
In this article, we will learn about a term test and process modes reside in the TIA PORTAL software of Siemens PLC.
How to Communicate with Excel from RsLinx?
I am using RsLogix 500 here to communicate with Rslinx to write the data from PLC to excel. You can also use RsLogix 5000.
Peripheral Inputs and Outputs in Siemens PLC
In this article, we will learn about peripheral inputs and outputs in the Siemens programmable logic controller (PLC).
How to Delete the Siemens CPU Memory?
We will learn about a method to delete a Siemens CPU memory in the PLC. To reset the memory first put your CPU into the STOP mode.
How to Retrieve PLC Project From Memory Card?
In case you lost your PLC program then you can retrieve your project backup from the memory card by following these steps.
How to Save a PLC Project to a Micro Memory Card?
If you already have a memory card inserted in the CPU, then while downloading one copy of the PLC program will automatically be saved to MMC.
How CPU Execute Program in Siemens PLC?
Learn about how CPU execute a program in the Siemens PLC, it reads the inputs from the input module then values are saved to PII (Process Image Input).