Beckhoff EtherCAT EK112 Series Manual page 19

2.1.1.3 Notes re. EtherCAT Fast Hot Connect technology
EtherCAT components that support Fast Hot Connect enable a faster fieldbus boot up following the
establishment of a connection. The boot up depends in detail on the number of devices, the topology and
activated Distributed Clocks. Whereas the normal establishment of a connection and communication takes
several seconds, less than 1 second is possible with FHC components.
Properties and system behavior
• Fast Hot Connect is supported from TwinCAT 2.11R3 Build 2221.
• Fast Hot Connect ports are specially marked.
Fig. 6: Identification of FHC port at EK1122-0080 and EK1101-0080
• Standard EtherCAT devices may not be connected to Fast Hot Connect ports. This is to be ensured by
measures on the application side, which is easy to implement by means of the topology change that is
usually carried out mechanically in such applications.
Fig. 7: Recommended combination of Ethernet ports
• If corresponding ports are nevertheless connected, a power reset of the devices involved (branch
terminal and coupler/box) is required.
EK112x, EK15xx Version: 3.6
Product overview
19