Networking

Auto-Addressing over Modbus

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Modbus is a common protocol used for communication between industrial devices. It’s a data layer used over an RS-485 physical interface, which is a differential signal designed to be tolerant to noise, an important criterion in industrial environments. To learn more about Modbus, check out this Wikipedia entry, or you can read the specification. For […]

Anyone who has worked with IPv4 networking has learned about the loopback address. To explain, say your system cannot connect to the Internet. The problem could be any of the following: Your router isn’t forwarding your IP packets to the Internet. Your internal network isn’t forwarding your packets to the router. Your system isn’t transmitting packets to […]