This programmable logic controller suits small to mid-sized distributed control applications. The Schneider DNP 0231 integrates easily into Modicon M171 or M172 architectures without extra hardware. Its compact housing prioritizes simple wiring and rapid panel deployment for maintenance teams.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Model | Schneider DNP 0231 |
| Product Type | PLC Module Controller |
| Dimensions (W x H x D) | 72 mm x 90 mm x 70 mm |
| Weight | 0.32 kg |
| Processor Clock | 48 MHz |
| Program Memory | 256 KB Flash (non-volatile) |
| Data Memory | 64 KB RAM |
| Energy Storage | Integrated supercapacitor (holds data for 72 hours) |
| Discrete Inputs | 8 channels (24 V DC, sink/source configurable) |
| Discrete Outputs | 6 channels (transistor, 0.5 A per channel) |
| Communication Ports | 1 x Modbus RTU (RS-485), 1 x non-isolated serial interface |
| Expansion Bus | 1 x local port (supports up to 4 additional I/O modules) |
| Power Supply | 24 V DC ± 15 %, 120 mA typical |
| Operating Temperature | -10 °C to +55 °C |
| Protection Class | IP20 (requires cabinet mounting) |
Reliable Processing and Memory Architecture
This controller runs user logic at a 48 MHz clock speed and processes up to 2,000 boolean instructions per millisecond. Its 256 KB Flash memory retains the application program permanently without external batteries. Meanwhile, the 64 KB RAM handles runtime variables, diagnostic counters, and system status flags. For data safety, an internal supercapacitor preserves critical values for up to 72 hours during unexpected outages.
Flexible I/O and Scalable Expansion
The Schneider DNP 0231 provides 8 discrete inputs for sensor connections and 6 transistor outputs for actuator control. Through its local expansion bus, this module supports up to four additional I/O units, thereby increasing total channel capacity significantly. This scalability makes the controller ideal for conveyor sections, packaging machinery, and basic positioning tasks.
Integrated Communication and Network Access
A Modbus RTU port over RS-485 enables reliable data exchange with variable frequency drives and operator panels. The second non-isolated serial interface serves programming uploads or diagnostic link purposes. These connectivity choices allow the Schneider DNP 0231 to report status updates to higher-level supervisory systems without requiring protocol converters.
Power Efficiency and Mechanical Design
This unit draws only 120 mA at 24 V DC, which reduces heat accumulation inside sealed enclosures. Its 72 mm width and 0.32 kg weight facilitate stable DIN-rail mounting even in vibration-prone environments. Furthermore, front-panel LEDs provide immediate visual feedback for power, running state, and communication errors.
Details
| Weight | 0.32 kg |
|---|---|
| Dimensions | 72 × 90 × 70 mm |
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