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Examples of PLC Inputs and Outputs

PLC Inputs and Outputs Overview  A Programmable Logic Controller (PLC) is a microprocessor-based digital electronic device, which uses a programmable non-volatile memory to store user-defined instructions and implement specific control functions like programming logic, and sequencing, timing, counting, and arithmetic operations to control various electro-mechanical systems and industrial processes. As a user, you can program […]

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CompactLogix 5000 Selection Guide (5069)

While small format, ultra-economical process controllers have been all the rage in recent years amongst automation manufacturers, their mid-scale counterparts have been quietly gaining upgrades and added feature sets in the background.  Marketing efforts today focus largely on sustainability and eco-awareness, admirably suggesting that industry leaders try to do ‘more with less’, but there are […]

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CompactLogix (1769) Processor Selection Guide

CompactLogix (1769) Processors Overview  1769 CompactLogix Processors are CompactLogix 5370 Programmable Automation Controllers (PACs) from Rockwell Automation/Allen Bradley. These controllers provide advanced control, communication, and I/O elements in a distributed compact package. The CompactLogix system is designed to bring together the benefits of a Logix platform- common programming, common control engine, and common network protocols- […]

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The CompactLogix Power Supply Selection Guide

Allen Bradley offers CompactLogix power supplies to meet the power requirements of CompactLogix controllers. Allen Bradley has two families of CompactLogix power supplies, 1768 CompactLogix, and 1769 compact input/output (I/O) expansion power supplies. These power supplies are specifically for powering the 1768 CompactLogix controllers, 1768 I/O modules, 1769-L3x CompactLogix controllers, and 1769 compact I/O modules. […]

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CJC Jumpers: Why are they needed in Thermocouple PLC Modules?

CJC jumpers are cold junction compensators used in analog thermocouple PLC modules. To better understand the concept of Cold Junction Compensation (CJC) with CJC jumpers, let’s first review what is a thermocouple and its working principle. What is a Thermocouple?  A thermocouple is a sensing device that measures temperature, it’s basically a high-temperature range thermometer. […]

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