Rockwell presents CIP Motion to benefit industrial automation

November 15, 2014 12:45 pm

 CIP Motion has punched a hole in an urban myth of industrial automation. The myth: Standard Ethernet cannot be used for motion control and so something needs to be developed that is based on Ethernet; adding time slice algorithms to the firmware or hardware of devices, or simply building a proprietary network with CAT5 cables and a gateway to standard Ethernet.
This is important because even today users are starting to run up against limitations in their current implementations. They want co-ordinated motion control with more than 32 axes on a single network. They want to synchronise axes connected to different controllers.
Also the users want a common programming and configuration environment for variable frequency and servo drives. They want discrete inputs and outputs integrated with rotary machines. Further, they wish to have video cameras mounted inside the machine. There are a number of semi-proprietary technologies that address each of these issues but EtherNet/IP with CIP Motion is the first to address them all using entirely standard Ethernet with IP.
In order to deliver these user benefits, ODVA has and continues to enhance the CIP (Common Industrial Protocol) and EtherNet/IP specifications to address these critical motion control requirements: • Controller to drive interfaces• Precision time synchronisation between devices (or CIP Sync) • Distributed registration across the entire machine• Distributed programmable limit switch and camming functionality placed anywhere in the process and driven by any axis in the system• Motion control accomplished through multiple drive types suitable for the application, including servo drives, voltz/hertz drives, and vector drives• Master encoder reference information placed directly on the Ethernet network for coordination of multiple axes from any given, existing axis.

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