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This listing is for a USED Allen‑Bradley ControlNet communication module, part number 1756‑CNB/D. This module is part of the Allen‑Bradley ControlLogix platform and functions as a ControlNet bridge, enabling high‑speed deterministic communication between ControlLogix controllers and ControlNet devices. The 1756‑CNB/D installs directly into a ControlLogix chassis and is commonly used in industrial automation systems requiring scheduled I/O, peer‑to‑peer messaging, and real‑time network control.
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