Top "Plc" questions

Timers in PLC - Structured Text

How do timers work in PLC Structured Text (ST)? How do we declare them? I've been studying a standard of …

timer plc st

PLC Programing in C# .NET

Can I Write Programs for PLC Controlling in C#? How?

c# plc

Learning PLC programming

How do I learn PLC programming? Would it differ greatly for different brands of PLCs? Is ladder programming the same …

plc

How can I communicate between a Siemens S7-1200 and python?

I am running a process on a S7-1200 plc and I need it to send a start signal to …

python plc siemens s7-1200

PLC Structured text, convert decimal to real(float). Not getting the value I expect. (IEEE-754)

I have a hardware that is communicating with the PLC over Profibus DP, that sends me 4 bytes of data in …

floating-point decimal ieee-754 plc codesys

Using Arrays in structured text

I am using B&R Automation Studio on a simulation PLC. I am just playing around with some programs …

arrays plc structured-text br-automation-studio

What is a Historian?

What is the function of a historian in terms of OPC and PLC?

opc plc historian

Good open source OPC software

We are currently using a free trail version of KEP Server for our OPC to communicate with our PLC. We …

open-source opc plc

Why is BCD = Decimal in PLC?

This question is derived from my previous SO question's commends. I am confused with PLC's interpretation of BCD and decimal. …

decimal plc bcd

Being a better / more efficient PLC Programmer

The company I am doing my intership/appretinceship in, does mainly PLC programming with Siemens modules. Comes from the fact …

performance plc