FAQ  When connecting with Yokogawa Electric Corporation's PLC FA-M3 via CPU Direct, can the cable "KM11-2T*A" be used? No, it cannot be used. Cause and Countermeasure It is because the control line needed for GP unit does not provide loopback. When using Yokogawa Electric Corporation's PLC FA-M3 via CPU Direct connection, please use the following combination; COM1(GP) + RS232C conversion cable by Pro-face, CA3-CBLCBT232-01 + Programming tool cable by Yokogawa Electric Corporation, KM11-2N*A.

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