FX3U High Speed I/O

Introduction The FX3U PLC supports up to 2 left-hand side high speed Input modules of the FX3U-4HSX-ADP type. When adding these modules there are some rules and limitations. Design Considerations The FX3U-4HSX-ADP uses the same first few inputs as the main FX3U PLC,...

Forcing I/O in Qn PLCs

Introduction The Q-Series PLC supports the facility to FORCE I/O but it is not always clear how to find out what has been forced or how to track forces. This document details the use of a feature called “Forced Input Output Registration/Cancellation”. Design...