![]() A master can have as many slaves as possible, but a slave can only have one master. Additionally, in a EtherNet/IP network, there has to be a master, and the rest are called slaves. AB is the most domain player in the industrial automation market, and when AB PLC only speaks EtherNet/IP, you must adapt EtherNet/IP onto your hardware/software or be left out.Īnyway, in a EtherNet/IP network, each device has to have a unique IP address. The second main reason (skip to next paragraph) is the push by AB to make it the most domain protocol. This allows EtherNet/IP to take advantage of the existing Ethernet infrastructures and gain huge popularity recently over other CIP based protocol. For typical reason, it combines the most popular Ethernet with CIP, and can coexist with existing network. EtherNet/IP became the most popular protocols for many reasons. This brings us to EtherNet/IP, the most widely used protocol in today’s automation.
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