1794-ACNR is Allen‑Bradley (Rockwell Automation) FLEX I/O series redundant media ControlNet communication adapter. It links FLEX I/O module rack to ControlNet industrial network, dual BNC ports support redundant cable media, one channel fault will not interrupt I/O communication. It can carry up to 8 FLEX I/O modules, widely applied in packaging production lines, chemical DCS, material handling and other high-reliability distributed control sites. It is an end-of-life spare part for legacy Rockwell ControlNet automation systems.

This DIN rail mounted module adopts IP20 protection class, powered by 19.2~31.2V DC, max current consumption 400mA. ControlNet communication speed 5Mbps, protocol version V1.25. Internal Flexbus supplies 5V power for rear I/O modules, isolation test voltage 850V DC. Front panel LED indicators include Comm A, Comm B and I/O status, convenient for on-site network diagnosis. Thumbwheel switch sets ControlNet node address. It supports hot swap under power-off state.

Built-in EMC suppression design resists industrial electromagnetic interference. Operating temperature -20℃ ~ +55℃, passed vibration and shock test to IEC60068 standard, suitable for workshop and heavy industry environment. Network configuration is completed via RSNetWorx software, used for I/O data exchange between ControlLogix PLC and remote FLEX I/O stations.

1794-ACNR is obsolete Rockwell communication adapter spare part. Many legacy ControlNet distributed control systems use this module for remote I/O connection. When the original module fails, replacement with identical 1794-ACNR can reuse DIN rail mount, BNC network cables and existing ControlNet configuration. Technicians install the adapter, set node address and verify network and I/O communication, so remote distributed I/O system resumes operation and reduces production downtime.

Before shipment, every 1794-ACNR undergoes comprehensive functional inspection including power-on self-test, ControlNet communication test, Flexbus interface verification and LED status inspection. All products come with 12-month warranty. Our automation technical team provides remote support for installation, wiring guidance, network configuration and fault diagnosis. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, 1794-ACNR is reliable spare redundant ControlNet adapter for legacy Rockwell FLEX I/O distributed control systems. It restores stable remote I/O data transmission, guarantees continuous production control, extends service life of automation assets and avoids whole network renovation.