Technical Data
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PC Cards cifX Compact PCI, Mini PCI, Mini PCIe, PCI-104 | Installation, Operation and Hardware Description
DOC120205UM53EN | Revision 53 | English | 2019-03 | Released | Public
© Hilscher, 2008-2019
10.4.3 EtherCAT Master (V4)
Parameter
Description
Maximum number of EtherCAT slaves
Maximum of 388 slaves, if RCX_GET_SLAVE_HANDLES_REQ
service is used for determining number of slaves.
The number of usable slaves depends on several parameters: the
available memory for the configuration file (see ‘configuration file’
below), used cycle time, frame propagation time.
Maximum number of cyclic input data
Appr. 4600 bytes, if no LRW command (Logical Read Write) is
used for process data
Maximum number of cyclic output data
Appr. 4600 bytes, if no LRW command (Logical Read Write) is
used for process data
Acyclic communication
CoE (CANopen over EtherCAT): SDO, SDOINFO, Emergency
FoE (File Access over EtherCAT)
SoE (Servo Drive Profile over EtherCAT)
EoE (Ethernet over EtherCAT)
Configurable with SYCON.net: CoE
If the file ETHERCAT.XML contains the appropriate configuration
information (e.g. created with "EtherCAT Configurator"), following
functions can be used: CoE, SoE, EoE
Mailbox protocols
CoE, EoE, FoE, SoE
Functions Distributed
Clocks
Redundancy
Slave diagnostics
Bus scan
Minimum bus cycle time
250 µs, depending on the used number of slaves and the used
number of cyclic input data and output data.
Topology
Line or ring
Slave station address range
1 – 14335
Data transport layer
Ethernet II, IEEE 802.3, 100 MBit/s, full-duplex
Configuration file
(ETHERCAT.XML or CONFIG.NXD)
Maximum 1 MByte
Synchronization via ExtSync
Supported (not configurable with SYCON.net)
ENI Slave-to-Slave copy infos
Supported (not configurable with SYCON.net)
Hot Connect
Supported (not configurable with SYCON.net)
EoE (Ethernet over EtherCAT)
Via NDIS
Limitations
The size of the bus configuration file is limited by the size of the
RAM disk (1 MByte) or Flash disk (3 MByte).
Store-and-forward switches cannot be used within network
topology due to hard receive timing model
RCX_GET_SLAVE_HANDLES_REQ can only communicate up to
388 slaves.
Process data is restricted by the dual-port memory to 5760 bytes.
Reference to firmware / stack version
V4.4
Table 171: Technical Data EtherCAT Master Protocol
