NX-ECC

*1. Refer to the NX-series Safety Control Units User’s Manual (Cat. No. Z930) for the number of Safety Control Units that
      can be connected.
*2. This function was added or improved for a version upgrade. Refer to the NX-series EtherCAT Coupler Unit User’s
      Manual (Cat. No. W519) for information on version upgrades.
*3. The range of node addresses that can be set depends on the model of the built-in EtherCAT port. For the node address
      ranges that can be set for a built-in EtherCAT port, refer to the user's manual for the built-in EtherCAT port on the
      connected CPU Unit or Industrial PC.
*4. This depends on the specifications of the EtherCAT master. For example, the values are as follows when the EtherCAT
      Coupler Unit is connected to the built-in EtherCAT port on an NJ5-series CPU Unit: 500 μs, 1,000 μs, 2,000 μs, and
      4,000 μs. For the specifications of the built-in EtherCAT port, refer to the user's manual for the built-in EtherCAT port
      on the connected CPU Unit or the Industrial PC.
*5. This depends on the Unit configuration.
*6. There are restrictions in the communications cycles that you can set for some of the NX Units. If you use any of those
      NX Units, set a communications cycle that will satisfy the specifications for the refresh cycles that can be executed by
      the NX Unit. Refer to the appendix of the NX-series Data Reference Manual (Cat. No. W525-E1-07 or later) to see if
      there are restrictions on any specific NX Units. For information on the communications cycles that you can set, refer to
      the user’s manuals for the NX Units.
*7. Refer to the NX-series EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for procedures for designing the Unit
      power supply system and I/O power supply system.
*8. Use a voltage that is appropriate for the I/O circuits of the NX Units and the connected external devices.

* The EtherCAT Coupler Unit conforms to EtherCAT standards. Check the specifications of the EtherCAT master being
  connected for the configurable topology. However, note that only NX-ECC203 EtherCAT Coupler Units (Ver. 1.5 or later) is
  compatible with a ring topology.

Note: Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version,
         support is provided by the oldest available version after the specified version. Refer to the user's manuals for the
         specific Units for the relation between models and versions.
*1 For the NX-ECC202, there is no unit version of 1.1 or earlier.
*2 For the NX-ECC203, there is no unit version of 1.2 or earlier.