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.

Engineered for high-speed, precise voltage data acquisition within the Sysmac automation platform, the Omron NX-AD2604 provides two differential analog input channels. This NX Series Analog Input Unit features a bipolar voltage range of -10 to +10 VDC, making it ideal for interfacing with standard industrial sensors, transmitters, and transducers. Utilizing a screwless clamping terminal block, this module simplifies electrical panel installation while maintaining secure, vibration-resistant connections. Dynamic data updating is achieved via the Free-Run refreshing method, ensuring reliable, real-time performance in demanding B2B control environments.
| Manufacturer | Omron |
| Part Number / Model | NX-AD2604 |
| Series | NX Series I/O System |
| Input Channels | 2 points |
| Input Range | -10 to +10 VDC |
| Input Method | Differential |
| Resolution | 1/8000 |
| Conversion Time | 250 us per point |
| Input Conversion Range | -5 to 105% (full scale) |
| Absolute Maximum Rating | +/- 15 V |
| Input Impedance | 1 MOhm min. |
| Overall Accuracy (25 degC) | +/- 0.2% of full scale |
| Overall Accuracy (0 to 55 degC) | +/- 0.4% of full scale |
| Isolation Method | Between input and NX bus: Power = Transformer, Signal = Digital isolator (no isolation between individual input channels) |
| Insulation Resistance | 20 MOhm min. between isolated circuits (at 100 VDC) |
| Dielectric Strength | 510 VAC between isolated circuits for 1 minute (leakage current 5 mA max.) |
| I/O Refreshing Method | Free-Run refreshing |
| I/O Power Supply Method | No supply |
| Power Consumption (CPU Connection) | 1.35 W max. (when connected to a CPU Unit or Communication Control Unit) |
| Power Consumption (Coupler Connection) | 1.05 W max. (when connected to a Communications Coupler Unit) |
| Dimensions (W x H x D) | 12 mm x 100 mm x 71 mm |
| Weight | 0.07 kg |
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| Country of origin |
Japan
|