Entries for 'Jon Carson'

Communication between Siemens HMIs and non-Siemens controllers

Ever wanted to use those very nice looking Siemens touchpad HMIs with a third party controller Siemens doesn't officially support? On a recent project I was presented with the following scenario: a customer already had several Siemens touch-scree...

Siemens S7 PLC Troubleshooting

Once you are familiar with their capabilities and methodologies, Siemens PLCs have the potential to make controls programming quicker and easier than ever. With support for function blocks, text-based programming, libraries, and user defined types, S...

Remote Machine Monitoring–Connecting to a Modbus Network with Java and Jamod

For a recent project, I had an interesting challenge. It involved a (relatively) simple control system, with an Allen Bradley MicroLogix PLC, and 30 or so inputs and outputs. The challenge was that the customer wanted to be able to access (and potent...

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