Technical Specifications Breakdown
Key parameters for the PC-A984-145 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | CPU Module |
| Product Line | Modicon |
| Weight | 3.00 lbs (1.36 kg) |
| User Memory | 8k |
| Registers | 1920 |
| Data Memory | 2k |
| Scan Time | 5 ms/k |
| Communication Ports | 1 Modbus, 1 Modbus+ |
| Local I/O | 256 |
| Total I/O | 512/512 |
| Local Drops | 1 |
| Maximum Racks | 4 |
Industry Applications
Manufacturing Line Control
The 5 ms/k scan time ensures rapid execution of logic, reducing cycle delays in assembly lines.
Building Automation Systems
Leverage the Modbus and Modbus+ ports to integrate HVAC, lighting, and access control subsystems. The 1920 register capacity allows for comprehensive data logging and monitoring.
Water & Wastewater Treatment
Handle sequential control tasks like pump sequencing and valve actuation with the 512 total I/O capacity. The 2k data memory supports recipe management and alarm handling.
Installation & Setup Guidance
Mount the module in a suitable rack (up to 4 maximum) within a clean, dry enclosure. Connect the Modbus port for primary communication and the Modbus+ port for high-speed peer-to-peer networking. Ensure proper grounding and shielding to minimize electrical noise. Configure I/O mapping using the Modicon programming software, allocating addresses for up to 256 local points.
Maintenance & Reliability
Inspect the module periodically for dust accumulation and loose connections. Maintain ambient temperature within the manufacturer's specified range (not provided; consult documentation). Avoid exposure to corrosive gases or excessive vibration. The robust design supports long-term operation in industrial environments.
Compatibility & Integration
The dual-port communication (Modbus and Modbus+) allows connection to HMIs, SCADA systems, and other controllers. Use Modbus+ for deterministic data exchange in multi-controller architectures.
Selection Guide & Purchasing Advice
When selecting a replacement or upgrade for your Modicon system, verify that the PC-A984-145 meets your memory and I/O requirements. For systems needing more than 512 I/O points, consider a higher-tier CPU. AutoDCSTech stocks this module and can advise on lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Troubleshooting & Common Issues
If the module fails to communicate, check the Modbus cable termination and baud rate settings. For scan time errors, reduce the program complexity or move non-critical tasks to a separate processor. If the module does not power up, verify the backplane connection and power supply output.
Availability & Condition at AutoDCSTech
| Part Number | PC-A984-145 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | France |
