Description

Product Overview

The Allen‑Bradley 1203-CN1 is a ControlNet to SCANport communication adapter designed to link legacy SCANport variable frequency drives and motor controllers onto a ControlNet industrial network. It translates deterministic ControlNet scheduled I/O commands into SCANport signals, enabling a ControlLogix or PLC-5 controller to send speed references, start/stop commands and receive drive fault, current and status feedback in real time. This hardware eliminates discrete hardwiring between PLC and VFD, reducing cabinet wiring density and lowering the risk of signal loss in high-noise plant environments. Automation engineers and maintenance teams rely on this adapter to integrate older Allen‑Bradley drives into existing ControlNet control architectures. Front-panel LED indicators display network and SCANport health, simplifying on-site diagnostics and speeding fault resolution during production downtime. Word count overview:172

Technical Specifications

• Product Model: 1203-CN1
• Brand: Allen‑Bradley
• Warranty: One Year
• Input Voltage: Powered from connected SCANport drive
• Operating Temperature: 0 °C to 60 °C
• Storage Temperature: -40 °C to 85 °C
• Response Time: Deterministic ControlNet scheduled update
• Protection Class: IP20, cabinet DIN rail mount
• Accuracy Class: Not applicable (communication adapter)
• Output Frequency: Not applicable
• Rated Current Range: 60 mA max, supplied by SCANport device
• Communication Interface: BNC ControlNet port; SCANport connector
• Supported Protocols: ControlNet, CIP, SCANport
• Overload Capacity: ESD protection, transient noise suppression
• Dimensions: 45 mm × 76 mm × 123 mm
• 

Application Scenarios

• Conveyor Drive Network Integration: This adapter connects 1336 PLUS II drives to the ControlNet backbone. The 1203-CN1 passes speed setpoints and motor status from the ControlLogix controller, coordinating multi-drive conveyor sections with fixed deterministic timing to avoid product misalignment.
• Pump Skid Process Control: Mounted on variable speed pump drives in water and wastewater facilities, the module delivers closed-loop pressure control over ControlNet. Networked fault signals are sent directly to the PLC for alarm logging without extra auxiliary wiring.
• Material Processing Fan Control: The adapter links SCANport-based fan drives to the plant ControlNet network. Operators adjust fan speed remotely from the control room HMI, and drive trip information is captured instantly for equipment condition monitoring.