Emerson 0471-0128-02 manual Features, Introduction to SM-EtherCAT, What is EtherCAT?

2 Introduction

2.1Features

•Standard RJ45 connectivity with support for shielded twisted pair.

•Dual 100Mbps EtherCAT interfaces for use in line topologies i.e. daisy chaining.

•Supports the Unidrive SP drives range, Mentor MP, Affinity, Digitax ST and Commander SK.

•Control loop synchronisation.

•Control cycle times down to 250µs.

•CANopen over EtherCAT (CoE) which includes:

•Support of CANopen DSP-402 (Device Profile for Drives and Motion)

•Interpolated position mode

•Velocity mode

•Profile torque mode

•Two transmit and two receive PDOs.

•SDO access to all profile objects and drive parameters.

2.2Introduction to SM-EtherCAT

SM-EtherCAT is a Solutions Module that enables the Control Techniques range of variable speed drives to be connected to an EtherCAT network as a slave device. It can be used in a variety of applications, from those requiring accurate synchronization and precise motion control, to those where ease of use and open loop control are appropriate.

2.3What is EtherCAT?

EtherCAT is an open high performance Ethernet-based fieldbus system that overcomes the system limitations of other Ethernet solutions. The Ethernet packet is no longer received, then interpreted and copied as process data at every connection; instead the Ethernet frame is processed on the fly. The development goal of EtherCAT was to apply Ethernet to automation applications that require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs. Typical application fields for EtherCAT are machine controls (e.g. semiconductor tools, metal forming, packaging, injection moulding, assembly systems, printing machines, robotics and many others).

2.4Solution module identification

The SM-EtherCAT can be identified by:

1.The label located on the underside of the Solutions Module.

2.The colour coding across the front of the SM-EtherCAT (brown-red).

Figure 2-1 SM-EtherCAT label Solutions Module name

SM-EtherCAT

		Customer
Hardware	Revision: 0 stdJ 41	and date code
issue
number	Ser No:3000005001	Serial number

8	SM-EtherCAT User Guide
www.controltechniques.com	Issue Number: 2