Beckhoff CU2508 User Manual

Commissioning
Real-time Ethernet port multiplier 35
Version: 2.6
Fig.41: Appending further EtherCAT slaves
Distributed Clocks settings
All CU2508 downlink ports are synchronized with each other and can appear as ReferenceClock in the
respective EtherCAT strand. In the default setting, however, the CU2508 port is not marked as Distributed-
Clocks-capable, hence under TwinCAT the next subsequent Distributed-Clocks-capable slave is selected as
the ReferenceClock. In each case the CU2508 port is the 1
st
slave in the respective strand.
Fig.42: EtherCAT Distributed Clocks reference
If the CU2508 port is to be used as the ReferenceClock in a system, the setting "Use as potential
ReferenceClock" must be changed; see fig. CU2508 slave - Distributed Clocks setting.
Fig.43: CU2508 slave - Distributed Clocks setting

Beckhoff CU2508 Specifications

General

Brand	Beckhoff
Model	CU2508
Category	Switch
Language	English