PC-L984-785 Compact CPU | Schneider Modicon

Introducing the Schneider Electric PC-L984-785 Compact CPU

The PC-L984-785 is a compact central processing unit for Modicon automation systems. This CPU module delivers reliable performance for industrial control applications. It offers balanced processing capabilities with efficient memory utilization in a compact design.

Core Technical Specifications & Performance

• Brand & Model: Schneider Electric PC-L984-785
• Logic Memory: Provides 24K of dedicated logic memory
• Total Memory: Features 42K of total memory capacity
• Processing Registers: Manages 1920 registers for data operations
• Scan Speed: Efficient 2.5 ms/k scan time for responsive control
• Communication Ports: One Modbus and one Modbus+ port
• Local I/O Capacity: Supports 256 local input/output connections
• Total System I/O: Controls up to 512 inputs and 512 outputs

System Architecture & Expansion

• I/O Drops: Configures 1 local I/O drop for base connection
• Rack Expansion: Expands to 4 racks for larger systems
• Physical Weight: Compact design at 5.00 lbs (2.27 kg)
• Controller Class: Compact CPU module for space-constrained applications
• Processing Power: Balanced performance for medium-complexity automation tasks

Packaging & Shipping Information

• Package Includes: One (1) PC-L984-785 compact CPU module unit
• Shipping Methods: International shipping via FedEx, UPS, and DHL
• Standard Packaging: Protective packaging for industrial electronic components

Installation & Integration Guide

• Install this compact CPU module in your Modicon control system rack
• Utilize the 24K logic memory for control program storage and execution
• Connect field devices using the 256 local I/O point capacity
• Communicate with network devices through the Modbus and Modbus+ ports
• Expand your control system with up to 4 additional racks as needed
• The efficient 2.5 ms/k scan time provides responsive system performance

Frequently Asked Questions (FAQ)

What is the difference between logic memory and total memory?

Logic memory (24K) stores the control program instructions, while total memory (42K) includes both program memory and data storage capacity.

What communication protocols are supported?

This CPU supports standard Modbus protocol and Modbus+ through its dedicated communication ports for industrial network connectivity.

How many I/O points can this CPU handle?

The PC-L984-785 supports up to 512 total I/O points when properly configured with expansion racks and modules.

Is this CPU suitable for compact control panels?

Yes, as a compact CPU module, it is specifically designed for space-constrained installations while delivering solid performance.

How does this compare to the PC-E984-785 controller?

The PC-L984-785 is a compact CPU module with 42K total memory, while the PC-E984-785 is a compact controller with up to 48K user memory and faster 1 ms/k scan time.