Technical Data
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PC Cards cifX PCI, PCIe, Low Profile PCIe | Installation, Operation and Hardware Description
DOC120204UM46EN | Revision 46 | English | 2015-12 | Relelased | Public
© Hilscher, 2008-2015
10.4 Technical Data of the Communication Protocols
10.4.1 EtherCAT
Master
Parameter
Description
Maximum number of EtherCAT slaves
Maximum 200 Slaves. The number of usable slaves depends on
the available memory for the configuration file. See ‘configuration
file’ below.
Maximum number of cyclic input data
5760 bytes
Maximum number of cyclic output data
5760 bytes
Minimum bus cycle time
205 µs, depending on the used number of slaves and the used
number of cyclic input data and output data. Recommended is a
cycle time of 1 ms and higher.
Acyclic communication
CoE (CANopen over EtherCAT)
CoE-Upload, CoE-Download
Maximum 1500 bytes
Functions
Get OD List
Get object description
Get entry description
Emergency
Slave diagnostics
Bus Scan
Supported
Redundancy Supported,
but
not at the same time with Distributed Clocks
Distributed Clocks
Supported, but not at the same time with Redundancy
Topology
Line or ring
Baud rate
100 MBit/s
Data transport layer
Ethernet II, IEEE 802.3
Configuration File (ethercat.xml or config.nxd)
PC cards PCI, PCI Express, PCI Express Low Profile, Mini PCI,
Compact PCI, Mini PCI Express, PCI-104 Real-Time Ethernet:
Maximum 1 MByte
PC cards PC/104 Real-Time Ethernet: Maximum 2 MByte
Limitations
The size of the bus configuration file is limited by the size of the
RAM Disk (1 Mbyte) or FLASH disk (2 Mbyte).
All CoE Uploads, Downloads and information services must fit in
one TLR-Packet. Fragmentation is not supported
Distubuted Clock and Redundancy can not be used at the same
time.
Reference to firmware/stack version
V3.0.x.x
Table 120: Technical Data EtherCAT Master Protocol
