One disadvantage of modular I/O is its lack of flexibility

• A. True
• B. False
• C. Not Applicable
• D. Sometimes

Answer: (B)

Modular I/O systems are designed to be flexible and scalable. Each module handles a specific signal type (digital, analog, specialty) and can be added, removed, or relocated to fit the process without changing the central controller. This plug-and-play capability, along with configurable addressing and options for distributed or remote I/O, lets you tailor the I/O layout precisely to current needs and adapt easily when requirements change. So the idea that modular I/O lacks flexibility isn’t accurate; the architecture is built to be flexible. There can be other trade-offs, like cost or bus limits, but inflexibility isn’t a characteristic of modular I/O.