Author Archives: John Rinaldi
What Control Engineers Need to Understand about VLANS
This is another in my series of blogs and videos for factory floor engineers. In [...]
Jul
EtherNet/IP Communications vs. Allen-Bradley PLC Communications
It’s no wonder that many control engineers confuse Allen-Bradley PLC Communications with EtherNet/IP communications. AB [...]
Jul
A Customer Rebels Against Industry 4.0
It might surprise you to know that I actually hear from many of you after [...]
Jun
Wishing You Bad Luck
Dear Graduate: I wish you bad luck… I write this in June, the time of [...]
Jun
Yes, It Was a Remarkable Bit of Stupidity
I blew it. I was wrong. I made a mistake. But at least I find [...]
Jun
The IT/OT Network Divide
OT (Operational Technology) comprises the processes, equipment, and materials that produce products. That product can [...]
Jun
The Mysterious World of the S7 Data Table
RTA gateways now support access to the S7 data table. That means that we can [...]
Jun
MQTT Grows Up
Over the years, I have been critical of the MQTT protocol. I am a manufacturing [...]
Jun
Renewed Effort to Promote CC-Link
I write this in early April of 2020, and right now there isn’t any baseball. [...]
Jun
The Nitty Gritty of Address Classes
It’s very difficult for us to imagine, but just two hundred years ago it was [...]
May
