Scope of Variables Scope refers to the visibility of variables. In other words, which parts of your program can see or use it. It determines the…
An OPC Server provides data to an OPC Client application (such as an HMI, Historian, etc.) using OPC. However, an OPC Server always uses a…
What is Load Cell A load cell is a force transducer. Which converts a force such as tension, compression, pressure, or torque into an electrical…
What is RAID Redundant Array of Independent Disks (RAID) is a virtual disk technology that combines multiple physical drives into one unit. It allows storing data across multiple hard…
What is Surge Protective Device A surge protective device (SPD) is designed to protect electrical systems and equipment from surge events by limiting transient voltages and diverting…
This month has been a great learning month. I was able to build and complete a small water SCADA system here in Bangladesh(thanks DhakaWasa for the…
To configure GeoSCADA Expert to communicate with a ModbusTCP device there are three ways to do this (I’ll list them in the order I think…
Master/Slave and Client/Server Terminology A Modbus Master or Modbus Client sends commands to another device. The Modbus Slave or Modbus Server device responds to the…
PLC and SCADA Interface : How it Works PLC is hardware which has all the inputs and outputs (I/Os)connected to it from the field. After this…
The direct display of individual memory locations is done through the use of special character sequences. These sequences are a concatenation of the percent sign…