Conditions

The use of cable redundancy is subject to the following conditions:

• A supplementary license with the appropriate scope is installed on the IPC (XP/CE). At present, licenses are available for a maximum of 250, 1000 or for an unlimited number of slaves.
  The TwinCAT EtherCAT redundancy supplement for the Windows NT and CE family is offered for download on the Beckhoff website
• Platform-dependent/operating system on the target device
• Windows NT family (XP/XPe/7): the supplement is installed on the target device. Starting in the TwinCAT RUN mode with activated cable redundancy is prevented if no local license is present.
• Windows CE family (CE, WES): the supplement must be installed on at least one NT platform. After that the installation file ("TwinCAT_EtherCAT_Redundancy_CE.I586_250.cab") is present under TwinCAT -> CE -> TwinCAT EtherCAT Redundancy. This must be copied to the embedded device and executed there.
• Please refer to the appropriate documentation for the combination of cable redundancy with the HotConnect principle.
• TwinCAT 2.10 from build 1313 or TwinCAT from version 2.11 is used.
• The user creates SyncUnits in the System Manager as required according to the configuration, see section SyncUnits.
• The control PC has two full-value, real-time capable, non-switched Ethernet ports.
  As a rule embedded devices (BXxxxx / CXxxxx) are not suitable.
• Parallel wiring from an EK1122 for the purposes of cable redundancy is not permitted.
• The supplementary EtherCAT cable redundancy secures against
• failure of Ethernet cable sections (e.g. between EK1100 couplers), provided the power supply to the stations is not interrupted.
• failure of the communications segment of a single terminal, provided the power supply to the subsequent terminals is not interrupted.
• The supplementary cable redundancy is only single-fault tolerant. If more than one malfunction occurs in the topology, full I/O communication will only be restored when all the faults have been eliminated. Manual or automation restart of the affected slaves may be required. This is partly also done by the System Manager.
• A combination of cable redundancy with distributed clocks is possible only with the use of the additional CU2508 device.