Allen-Bradley I/O

1734-RN014 FI

1734-OE4C Analog Output Module Not Holding Last State

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,...
1769-AENTR Featured Image

The 1769-AENTR as seen at Automation Fair 2013

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)...

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

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....
Rockwell Automation Literature Library Homepage

How to get Allen-Bradley (A-B) and Rockwell Software (RS) Manuals and Documentation: Part 2

Getting hard physical copies of manuals and documentation for Allen-Bradley and Rockwell Software products:   Click here to read part one of this article Yesterday we discussed how to get electronic copies of Allen-Bradley (A-B) and Rockwell Software (RS) manuals and documentation....
Rockwell Automation Literature Library Homepage

How to get Allen-Bradley (A-B) and Rockwell Software (RS) Manuals and Documentation: Part 1

When using new products from Allen-Bradley or Rockwell Software, you’ll likely need to refer to the product documentation and manuals for product details. And if you still have the box the product came in, you’ll often find an installation...
Large Rack Of Point I/O

Large Point I/O rack communication issue

  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...

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