Capture and Average a Value with FFL, FFU, and AVE Instructions

In a previous article regarding ControlLogix processor faults, I mentioned one of the ways a processor can be faulted was by causing an array to go out of bounds when using an FFL and FFU instruction. These instructions are commonly...

ControlLogix Processor Faults

Years ago, I was in the middle of a normal day of work when I got a call on the radio that a conveyor had stopped, and then I was informed that the entire process around that conveyor had...

Converting PLC-5 Ladder Programs to ControlLogix

As I was entering kindergarten in 1986, Allen Bradley was releasing one of the first platforms that could be programmed by a personal computer, the PLC-5. Fast forward thirty-one years later to 2017, Allen Bradley discontinued support of these processors...

Using the Controller’s Time in Studio 5000

If the need arises to use specific time in your ladder logic program, this guide will give you a reference to go by. Possibly you have a cleaning device that only needs to operate once an hour or once a...

Bridging Networks Using RSLinx

If you are using Rockwell control systems as a platform across your facility or if you have integrated systems between other vendors along with any Rockwell products, you may have found the need to cross multiple networks to gain...

Siemens vs. Allen-Bradley PLCs: One Engineer's Perspective

Are you an experienced controls engineer working in manufacturing or integration with an in depth knowledge of Allen-Bradley and have recently been introduced to Siemens? For eleven years I've predominately with Allen-Bradley Programmable Controllers, which is not very surprising as...

Converting ControlNet I/O to EtherNet I/O

If you have had ControlLogix systems running in your facility for any amount of time, chances are they contain ControlNet communication modules for the communication between processor chassis and their controlled remote I/O chassis as well as a myriad...

Getting CIP Data from your Stratix Switch

Have you ever used or thought of using your HMI as a network monitoring tool? What if your HMI system was used for more than just an operational tool? What if it can also help you, as a control system...

Setting up a 1783-ETAP

If you are contemplating using a Device Level Ring (DLR) topology in your control system networks, an important device in that network is the EtherNet Tap (ETAP). If the remote devices in your DLR network will require fiber, the ETAP...

PanelView Plus to ControlLogix, SLC-5/04, & PLC-5 over DH Plus (Video S35)

In this week's episode of The Automation Show, I cover how to use View Studio to create and download a PanelView Plus program to read data from a ControlLogix, SLC-5/04 and PLC-5 over a Data Highway Plus network: For more...