Omron E3NC, Руководство по эксплуатации

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7 Function Specifications
7 - 8 E3NW-ECT EtherCAT Digital Sensor Communication Unit Operation Manual (E429)
 Application
The Sensor Communication Unit and the Distributed Sensor Unit have a feature that automatically
registers the number of connected Sensor Amplifiers. It is not necessary to register the number of
Sensor Amplifiers with the Configuration Tool or through SDO communications in advance. (You can
also manually register the number of Sensor Amplifiers with the Configuration Tool or through SDO
communications.)
 Details of Functions
The Sensor Communication Unit and Distributed Sensor Unit detect the number of Sensor
Amplifiers that are connected to them when the power supply is turned ON. This number is
registered as the number of Sensor Amplifiers. It does not matter whether you turn ON the power
supply to the Sensor Communication Unit or to the Distributed Sensor Units first.
If the number of Sensor Amplifiers that are connected to the Sensor Communication Unit and
Distributed Sensor Units changes after the power supply is turned ON (i.e., if the registered number
disagrees with the connected number), an error occurs. Refer to Chapter 8 Troubleshooting and
Maintenance for details.
Precautions for Correct Use
If you need to add Sensor Amplifiers to the Sensor Communication Unit or to a Distributed
Sensor Unit after the system begins operation, make sure to turn OFF the power supply to the
Sensor Communication Unit and all Distributed Sensor Units.
To manually register the number of Sensor Amplifiers, use SDO communications.
The applicable index is 3001 hex.
For the set values, refer to the description of object index 3001 hex (Number of Sensors) in "A-1 Object
Dictionary" on page A-2.
7-2-4 Automatic Detection of Connected Sensor Amplifiers
Outline of Operation
Setting Methods