With the many communication networking options available for control systems, including Ethernet and serial, PLCs need to have adequate ports and protocols. Productivity3000 CPUs have several built-in communication ports; optional modules can provide protocol conversions or additional serial ports.
Today's PLCs need to communicate to numerous different industrial devices including remote I/O, motor drives, servo controllers, operator interfaces, and server-level PCs running various manufacturing related applications. These devices can all use different connection strategies and different communication protocols. Therefore, it's vital for machine builders and other users to install PLCs that can seamlessly connect with existing older networks as well as new ones, since each installation site can have very different communication needs.
The Productivity3000 CPUs have up to 6 communications ports built-in and support an assortment of industrial protocols including Modbus, EtherNet/IP, and MQTT. For most applications, the communication ports provided by the CPU is sufficient. To add capability or capacity, serial modules are available to add extra ports or to perform the necessary protocol conversions.
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