984 Architecture Controller with Conformal Coating for Harsh Environments
The PCE984258C serves as a high-performance compact CPU within Schneider Electric’s Modicon 984 platform. Engineers deploy this processor to manage complex control tasks across manufacturing and process industries. Consequently, the module delivers reliable logic execution while its conformal coating shields internal circuitry from moisture and contaminants.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PCE984258C |
| Manufacturer | Schneider Electric |
| Series | Modicon Compact |
| Product Type | Compact CPU Module |
| Processor | Intel 386 EX, 25 MHz |
| User Logic Memory | 16K words (512K total) |
| State RAM | 32K words |
| Internal Registers | 1,920 |
| Scan Time | 0.2–0.6 ms/k (binary logic) |
| Communication Ports | 2 × Modbus (RS-232) |
| Local I/O | 256 points (digital) |
| Total I/O Capacity | 512 inputs / 512 outputs |
| I/O Drops | 1 station |
| Maximum Racks | 4 |
| Operating Temperature | -40°C to +70°C |
| Weight | 1.36 kg |
| Protection Class | IP20 |
| Special Feature | Conformal Coating |
Memory and Processing Power
The PCE984258C provides 512K of total memory for demanding applications. It manages 1,920 internal registers for storing process variables and system parameters. With a scan time of 0.2 to 0.6 milliseconds per thousand binary instructions, the processor delivers fast deterministic response.
I/O and Communication
Two Modbus ports enable seamless integration with drives, HMIs, and remote stations. The module supports 256 local I/O points directly connected to the base chassis. Additionally, engineers can expand the system to four racks with 512 total inputs and 512 total outputs.
Environmental Protection
A standard conformal coating protects the circuit board from moisture, dust, and chemical contaminants. This feature suits deployment in chemical plants, food processing, and outdoor installations. The extended -40°C to +70°C range provides a 10°C margin over typical PLC specifications.
Details
| Weight | 0.25 kg |
|---|---|
| Dimensions | 130 × 100 × 20 mm |
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