You can read this post on  LinkedIn  as well. Introduction: Embarking on a journey through the intricate realm of Allen Bradley controllers can be both rewarding and bewildering. But fear not, fellow adventurers! Today, we delve into the enigma of Error Code 16#0204 , a puzzle that has left many scratching their heads. Prepare to unravel this perplexing riddle as we navigate the intricate web of local and remote I/Os. Grab your magnifying glass and join me on this thrilling escapade! If it is an all-or-none case, you can check ABB's article SLOGIX 5000 ERROR CODES WHEN USING ETHERNET IP AND ABB DRIVES . Section 1: Understanding the Issue When using a CompactLogix 5380 controller with two 1747-AENTR Ethernet communication modules and two 1746-A13 chassis, it was observed that only the last two modules (1746-IA16 and 1746-OW16) were not being recognized by the controller. Several assumptions were made initially, such as module failure or power consumption issues, but they turned out

You can read this post on  LinkedIn  as well. Introduction: In the spirit of Austin Kleon's wisdom that "You don't have to be a genius!" in the book SHOW YOUR WORK . I am here to share my experiences and newfound knowledge as a full-time Electrical Engineer. Join me as we explore my first project, where I encountered a PLC (Programmable Logic Controller) controlled machine, a C-MORE touch panel HMI, and the intriguing puzzle of their arrangement. Together, we will navigate the challenges and triumphs of modifying the setup, configuring parameters, and establishing communication. So, let's dive in! Section 1: Unveiling the Setup Upon closer inspection, an unconventional arrangement revealed itself—a PLC-controlled machine with a mixture of local and remote I/O modules, programmed in DirectSOFT, and a C-MORE touch panel HMI, all connected through a switch. An eyebrow raises, and a realization dawns: the Ethernet cable should connect the HMI panel directly to the swi