Ethernet/IP is a communication protocol for industrial automation technology based on Ethernet. Ethernet/IP uses the CIP (Common Industrial Protocol) known from DeviceNet. Changing over to the new technology is therefore very convenient for DeviceNet users.
Ethernet/IP has the following characteristics:
- Real-time communication is based on CIP via UDP/IP, including standard Ethernet
- Suitable for real-time requirements with cycle times >10 – 40ms
- Use of standard network components (switches etc.) and IT practices
- Communication/routing without special gateway across network segments
- Redundancy concepts for transmission paths and control system access available
AUMA actuators with AC .2 actuator controls support Ethernet/IP, allowing easy and flexible integration into virtually any type of network.
- Switched Ethernet with flexible priority flow control
- Data exchange in compliance with producer consumer model:
A field device/adapter as producer provides
process data to the DCS/scanner (consumer)
- IP based addressing in compliance with IT practices
- CIP protocol communication via UDP/TCP/IP
Cyclic data : CIP Implicit I/O via UDP
Acyclic data : CIP Explicit Messages via TCP
- Device classes:
Adapter (field devices)
- CIP data structure:
Device/process data included as attributes within CIP data objects.
- Redundancy via Device Level Ring (DLR)
- Network diagnostics via Managed Switches
Actuators with Ethernet/IP
- Available for SA multi-turn actuators and SQ part-turn actuators with AC 01.2 actuator controls
- 1 Ethernet port 100BASE-TX (100 Mbit/s) for star wiring
- Connection via M12 connector or RJ-45 connector
- IP settings via DHCP or operating software
- Simple wiring by means of auto negotiation,
- cross over and polarity
- Process data input/output represented in CIP I/O objects
- Classification of diagnostic actuator signals according to NAMUR NE 107
- Device integration via EDS file
Commissioning & communication
AUMA actuators with Ethernet/IP interface integrate smoothly into network infrastructures and can be identified and addressed by means of their IP address – similar to the PCs within a local network.
Just few steps are required to integrate an AUMA actuator into an Ethernet/IP environment.
First, the IP address is assigned and a standardised device description (EDS file) integrated into the DCS.
The communication objects/instances for process representation input and output data are configured using the system tools of the DCS.
For higher real-time requirements, the network utilisation has to be scheduled and managed switches with IGMP functionality have to be used.