What Is SCADA? Supervisory Control Without Replacing the PLC
SCADA sits above PLCs and RTUs: it acquires field data, alarms operators, and issues supervisory commands across plants and remote assets—without replacing local deterministic control.

Designed for integration within legacy industrial control networks, the Honeywell 51402573-450 serves as a robust Universal Control Network Interface (UCNIF) module. It establishes reliable physical and logical communication links between the controller node—such as an Advanced Process Manager (APM) or High-Performance Process Manager (HPM)—and the coaxial Universal Control Network (UCN).
Engineered for high-availability industrial environments, this assembly mounts directly into a standard Honeywell 15-slot card file chassis. The module ensures deterministic, real-time data exchange across critical process control systems, maintaining high signal integrity and system synchronization.
| Manufacturer | Honeywell |
| Part Number | 51402573-450 |
| Module Type | Universal Control Network Interface (UCNIF) |
| System Compatibility | TDC 3000 / TPS Systems |
| Mounting Location | 15-Slot Card File Chassis |
| Net Weight | 0.75 lbs (0.34 kg) |
| Shipping Weight | 1.0 kg (2.2 lbs) |
To maintain network integrity and prevent electrical damage, adhere to the following installation guidelines:
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| Country of origin |
United States
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