A-B 5380 and 5069: Don't forget to order your terminal blocks!

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The new 5380 CompactLogix and 5069 Compact I/O don't come with terminal blocks. For well over a decade Allen-Bradley customers counted on terminal blocks being included when they purchased either a 1769 CompactLogix controller, or 1769 Compact I/O. However, with the...

Rockwell launching new I/O line: 5069 Compact I/O platform

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Recently one of our readers brought to our attention that Rockwell Automation was preparing to launch a new I/O platform (thanks Brian!) Not having heard of it myself, I headed over to Rockwell's Literature Library to see if they had yet to published any...
Flex Ex End of Life Fi

Rockwell updates Flex EX as "End of Life"

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While preparing a story on another product's life cycle status, we became aware of the fact that Rockwell had updated the status of their 1797 Flex Ex line to "end of life." The Flex Ex line of distributed I/O is based on the popular Flex I/O...
MicroLogix 1500 to 1400 or CompactLogix

MicroLogix 1500 Migration Options

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With the recent announcement from Rockwell Automation that the MicroLogix 1500's status has been changed to "End of Life," many are asking, "What's the best Micro to migrate too?" Since the 1500 has some unique features, in order to suggest a...

What is IO-Link?

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If you're like me you've likely used DeviceNet and Hart, but until recently have never heard of IO-Link. So in today's article we'll take a look at the basics of this sensor and actuator communications technology. 1) Point to Point Communications IO-Link is...
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How to avoid "bricking" Point I/O modules when you attempt to flash firmware

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I was recently contacted about some very experienced controls engineers who had ran into a strange issue. They had come across a firmware problem with one of Rockwell's 1734 Point I/O modules, but weren't having any luck successfully upgrading the firmware. Actually, it was worse than that...
1734-RN014 FI

1734-OE4C Analog Output Module Not Holding Last State

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I recently became aware of an issue with the 1734-OE4C not holding late state. If you use this module in an installation in which holding last state is important, you'll want to read the following. As I described in Monday's blog,...
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Why the option to "hold last state" is important in control systems

There are some control system applications where system outputs must hold last state in the event they become physically disconnected from the controller, or if the controller stops controlling those outputs for any reason. These applications include some heating, cooling, and pumping applications where the...
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The 1769-AENTR as seen at Automation Fair 2013

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Mid-morning of the first day of Automation Fair 2013, I had the fortune of participating in a show floor meeting with Dexter Long, the CompactLogix product manager for Rockwell Automation. The meeting was to discuss the newly announced (and long desired)...
Using the EthernetIP Capacity Tool Featured Image

Estimating your Allen-Bradley (A-B) Logix controller's Ethernet/IP bandwidth using Rockwell's free Ethernet/IP capacity tool

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When designing or upgrading a system which relies on a network, bandwidth is always a concern. But for Rockwell's CompactLogix and ControlLogix on an Ethernet/IP network there is a free, easy to use utility to help you size your system. Rockwell's Ethernet/IP Capacity Tool: UPDATE 06/01/2018:...