Converting ControlNet I/O to EtherNet I/O

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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...

Converting Equipment from PC-Based to PLC-Based Control

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My company was provided an OEM label printer and applicator machine that was being controlled by five Arduino PC boards. They were asked to provide a PLC control system, however, they insisted that they needed to use this controls architecture...

How To Add ControlNet Point I/O To ControlLogix (Video, TAS 18)

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In this week's episode of The Automation Show, we take a look at how you add ControlNet Point I/O to a ControlLogix system: For more information, check out the "Show Notes" located below the video. [vimeo 366837698 w=750 h=420] The Automation Show,...

How To Add Ethernet Point I/O To ControlLogix (Video, TAS 17)

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In this week's episode of The Automation Show, we take a look at how you add Ethernet Point I/O to a ControlLogix system: For more information, check out the "Show Notes" located below the video. [vimeo 366838759 w=750 h=420] The Automation Show,...

Point I/O and Flex I/O Compared (Video, TAS 14)

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In this week's episode of The Automation Show we compare and contrast Point I/O with Flex I/O: For more information, check out the "Show Notes" located below the video. [vimeo 366841556 w=750 h=420] The Automation Show, Episode 14 Show Notes: Previous article mentioned...

Point I/O vs Flex I/O

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A reader recently asked what the difference was between Point I/O and Flex I/O, and in today's article I'll share my thoughts on the subject. Note: Those not familiar with Rockwell's I/O products may also want to consider 1756 I/O,...
Failed to flash 1734-OE4C step featured image

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,...

Can multiple Logix PLC's control the same Ethernet I/O?

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A client recently asked me if multiple CompactLogix (or ControlLogix) processors could control the same Ethernet I/O. Since RSLogix5000 has supported Ethernet I/O, its been possible to setup two processors to control, or "own," the same remote rack of Ethernet I/O....
Large Rack Of Point I/O

Large Point I/O rack communication issue

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  I was recently called into a “consumer goods” plant to look at a communication problem with Point I/O. The night before I was told all the Point I/O, which had been successfully tested overseas, was no longer working. However, when I arrived on-site the problem was...