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Example of a Cost Comparison Between Horner and Allen Bradley There are endless applications for small programmable logic controllers, and they typically will result in increased product quality, increased safety, and better process oversight and data. They also almost always result in less operator intervention and workload. This comparison will examine the costs of hardware and software for a relatively small application which requires a local human-machine touch interface. Some of the basic assumptions are: Small number of IO with some analog Medium/small size touchscreen interface Ethernet and Modbus connectivity Required Programming Software All prices are List Conclusion Including the