Tag Archives: PROFINET IO

EtherNet/IP API

In the early days of the PC, there was little to no source code to [...]

Multiple Masters

When an engineer starts using Modbus TCP (the Ethernet version) instead of Modbus RTU (the [...]

MicroLogix PLC

The human brain is an incredible machine. Over the past few years, I’ve learned some [...]

Open Source In Automation Products

There are a lot of things I like: pizza, bacon and eggs, bagels with real [...]

Multicast Communication

I’m sometimes envious at how a group of women can be engaged in multiple concurrent [...]

Modbus for City Slickers

I like the movie City Slickers. I think it appeals to me because we are [...]

VLAN ESSENTIALS

Recently, just out of curiosity, I’ve asked a number of controls people about VLANs. The [...]

RINGS, RINGS, and MORE RINGS…

There is a rather startling shift in thinking about how to architect control systems. For [...]

Let’s Talk About the Bus in Modbus

A computer protocol like Modbus is nothing more than a series of bits with a [...]

IOT: Have it Your Way

I hate the term IoT – the Internet of Things. It is just wrong on [...]