The Arduino talks to a USB card reader using a USB host shield. Then it communicates with the PLC using an RS232 link and the DF1 protocol that most Allen Bradley PLCs understand.

Single-pair Ethernet is a communication standard that combines data and power on one unshielded twisted pair, for industrial installations over exiting and vehicle installations, for example, and ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...