Flashback Friday! MicroLogix to PowerFlex 4


Welcome to The Automation Blog's

“Flashback Friday!”

Today I'm highlighting a couple of eleven year old MicroLogix programs showing how to communicate to a PowerFlex 4.

Back in 2004 many small OEM's were approaching me about using the MicroLogix to control the small PowerFlex 4 series of drives over a serial connection.

MicroLogix-1200-to-PowerFlex-4-ModbusAt the time it could be accomplished in one of two ways:

  1. Using a 22-SCM-232 which converted DF1 to Modbus
  2. Using the latest version MicroLogix which supported Modbus natively.

The result was these two “proof of concept” demos.

To create them, I relied heavily on code found in the PowerFlex and SCM manuals, which at the time contained several errors that made getting the code working quite challenging.

[artadrr-pf-e]Posted on my original website back on February 9th, 2004, you can now find the original articles right here on The Automation Blog using the below links:

And if you have any questions, comments, or suggestions, please don’t hesitate to share them with us by using the “post a comment or question” link below.

Sincerely,

Shawn Tierney
Automation Instructor and Blogger (post views: 140 views)

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