SEW-Eurodrive DFE24B EtherCAT - Communication Via Ethercat; Overview

58
Manual – Fieldbus Interface DFE24B EtherCAT®
7
Communication via EtherCAT
®
Operating MOVITOOLS
®
MotionStudio via EtherCAT
®
7.4 Communication via EtherCAT
®
7.4.1 Overview
EtherCAT
®
provides the user with acyclic parameter services in addition to cyclic pro-
cess data. This acyclic data exchange takes place via the mailbox gateway of the
EtherCAT
®
master.
The parameter services of MOVITOOLS
®
MotionStudio are integrated into the
EtherCAT
®
telegrams via the mailbox gateway in the EtherCAT
®
master. The feedback
of the drives is transferred by the EtherCAT
®
slave in the same way to the mailbox gate-
way and further to MOVITOOLS
®
MotionStudio.
The following cases must be distinguished for the installation of the mailbox gateway
and MOVITOOLS
®
MotionStudio:
• Case 1: Installation on the same unit (page 54)
– The EtherCAT
®
master and MOVITOOLS
®
MotionStudio run on the same unit.
No additional hardware required.
• Case 2: Installation on different units (without SEW controller) (page 55)
– The EtherCAT
®
master and MOVITOOLS
®
MotionStudio run on different units.
This is the case if no suitable (Windows-based) operating system is available or
MOVITOOLS
®
MotionStudio is to be run on a separate PC. The EtherCAT
®
mas-
ter needs a second Ethernet interface that is connected to the engineering PC on
which MOVITOOLS
®
MotionStudio is running.
• Case 3: Installation on different units (with SEW controller as EtherCAT
®
master)
– The network topology is identical to case 2. If you use an SEW controller, you
merely have to set the engineering access in MOVITOOLS
®
MotionStudio ac-
cordingly. The routing via the mailbox gateway and the EtherCAT
®
communica-
tion with downstream drives is performed automatically.
You can use PROFIBUS or Ethernet (SMLP not
EtherCAT
®
) as engineering ac-
cess to the SEW controller. For detailed information, refer to the documentation
of the SEW controllers.
INFORMATION
Unassigned EtherCAT
®
interfaces of an EtherCAT
®
slave must not be used for engi-
neering purposes.
• Use only the EtherCAT
®
master interface intended for engineering for this purpose.