Omron CJ1W-ECT21 Operation Manual page 61

EtherCAT master
Precautions for Correct Use
• The cable between any two nodes (L1, L2 ... Ln) must be 100 m or less.
• Firmly connect the communications cable connector until it clicks into place.
• When you install the communications cables, observe the cable specifications (e.g., bending
radius) of the cable manufacturer.
• Do not disconnect the communications cables from the EtherCAT Slave Units during opera-
tion. The outputs from the EtherCAT master may become unstable.
Additional Information
Make sure the cable between each pair of devices connects an output port to an input port.
Normal communications are not possible if an output port is connected to another output port or
an input port is connected to another input port.
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)
Communications
cable
L1
L2
Ln
Do not connect anything.
2 Nomenclature and Installation
Input port
Output port
EtherCAT
Slave Unit
Last EtherCAT slave
2
EtherCAT
slaves
2 - 13