...Console E3X-MC11, E3X-MC11-SV2 and E3X-MC11-S cannot be connected. 7. The E3X-DRT21-S, E3X-CRT, E3X-ECT, and E3NW Sensor Communications Units cannot be used with the models with ON/OFF output...

https://www.ia.omron.com/data_pdf/cat/e9nc-t_e434-e1_10_4_csm1012458.pdf

...ac Studio version 1.16 or higher. *8. A communications unit for connecting to EtherCAT network (E3X-ECT) is additionally required. *9. The EtherCAT Coupler Unit (NX-ECC20@ with unit version 1...

https://www.ia.omron.com/data_pdf/cat/sysmac_studio_ds_e_18_35_csm1000603.pdf

.../ 3G3RX2用EtherCAT通信ユニット 形3G3AX-MX2-ECT / 形3G3AX-RX2-ECT＜センサ＞・光学式/磁気式ON/OFFセンサ用通信ユニット 形E3NW-ECT、形E3X-ECT・変位/測長センサ ZW8000 / 7000 / 5000シリーズ・画像セ...

https://faq.fa.omron.co.jp/tech/s/article/faq05976