EtherCAT Coupler with ID switch and diagnostics EKM1101

EKM1101 | EtherCAT Coupler with ID switch and diagnostics

The EKM1101 EtherCAT Coupler connects the ELMxxxx EtherCAT measurement modules with EtherCAT. Such a station consists of an EKM1101 coupler, any number of EtherCAT Terminals and a bus end cap or an EtherCAT extension such as EK1110 or EK1122. The coupler converts the passing telegrams from Ethernet 100BASE-TX to E-bus signal representation.

On account of three significant properties, the EKM1101 and the functionally identical ELM9410 power supply terminal are designed to meet the needs of high-precision analog measurement technology, e.g. with ELM3xxx terminals:


As a result, the EKM1101 can be used in special measuring situations instead of the conventional EK1100 EtherCAT Coupler. Mixed operation with EL9410 is possible, but this negates the concept of electrical isolation. The EKM1101 has two hexadecimal ID switches for assigning an ID to a group of EtherCAT components. This group can then be located at any position within the EtherCAT network. Variable topologies are therefore easily implementable.

Technical data EKM1101
Task within EtherCAT system coupling of EtherCAT Terminals (ELxxxx) to 100BASE-TX EtherCAT networks, with identity verification
Data transfer medium Ethernet/EtherCAT cable (min. Cat. 5), shielded
Distance between stations max. 100 m (100BASE-TX)
Number of EtherCAT Terminals up to 65,534
Type/number of peripheral signals max. 4.2 GB addressable I/O points
Number of configurable IDs 256
Protocol EtherCAT
Delay approx. 1 µs
Data transfer rates 100 Mbit/s
Bus interface 2 x RJ45
Power supply 24 V DC (-15 %/+20 %)
Current consumption E-bus
Current consumption from US 50 mA + (∑ E-bus current/4)
Current consumption from UP 50 mA + load
Current supply E-bus 2000 mA
Power contacts max. 24 V DC/max. 2 A
Special features electrically isolated output voltages, reverse polarity protection, diagnostics of supply and output voltages
Electrical isolation 500 V (power contact/supply voltage/EtherCAT)
Weight approx. 450 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals/markings CE
Cordsets cordsets and connectors
EtherCAT For further EtherCAT products please see the system overview