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Digital Input/Output

The digital input/output device (dry contact converter) provides dry contact signal transmission over optical fiber or ip network.

Define the signal, direction and feedback before selecting remote I/O

Dry contacts, powered digital inputs and analog signals are different electrical objects. Build a point table before deciding between a fiber link, an IP network or a wireless architecture.

  • Identify input and output type, voltage or contact requirements, channel count and supported direction for each point.
  • Distinguish command transmission, actual output switching and independent equipment-state feedback.
  • For IP-based devices, confirm addressing, protocol, polling or event behavior and the response required after a link interruption.
  • Confirm local power, isolation, wiring and the safe state required by the actual control system.
Selection questions and technical guides

Is a dry contact the same as a powered voltage output?

No. A dry contact provides a switching relationship; external circuit voltage and current must remain within the rated contact limits.

Does receiving a command prove the remote equipment changed state?

No. Transport receipt, output action and independent equipment feedback are separate checks. Plan feedback and acceptance tests explicitly.