Schneider Modicon PC-L984-785 Compact CPU PLC Module

PC-L984-785 Schneider Electric Modicon Compact CPU

PC-L984-785 is a compact CPU from Schneider Electric. It belongs to the Modicon series. This module handles industrial control tasks with speed and stability. It offers strong logic memory and smooth complex operations. The unit fits demanding automation environments.

• Brand: Schneider Electric
• Model: PC-L984-785
• Series: Modicon
• Type: Compact CPU
• Condition: Industrial control module

Why This Module Stands Out

• Fast scan time: 2.5 ms per kilobyte supports quick response.
• Strong memory: 24k logic memory handles many control tasks.
• Large total memory: 42k supports complex data handling.
• Flexible communication: One Modbus port and one Modbus+ port.
• Scalable I/O: 256 local points and up to 512/512 total I/O.
• Rack support: Up to four racks for larger setups.
• Compact design: Saves panel space in industrial cabinets.
• Reliable build: Made for robust factory environments.

Technical Data

• Brand: Schneider Electric
• Model: PC-L984-785
• Product Type: Compact CPU
• Product Line: Modicon
• Part Number: PC-L984-785
• Weight: 5.00 lbs (2.27 kg)
• Logic Memory: 24k
• Registers: 1920
• Total Memory: 42k
• Scan Time: 2.5 ms/k
• Communication Ports: 1 Modbus, 1 Modbus+
• Local I/O: 256
• Total I/O: 512/512
• I/O Drops: 1
• Maximum Racks: 4
• Measurement Range: Not specified for this CPU module
• Frequency Response: Depends on connected I/O modules
• Sensitivity: Not applicable for CPU logic control
• Linearity: Not applicable for CPU logic control
• Resolution: Not specified for this CPU module
• Temperature Range: Confirm from site conditions and panel design
• Environmental Tolerance: Designed for industrial environments
• Anti-interference Ability: Built for robust industrial control use

Installation Guide

• Mount the CPU in a suitable Modicon rack.
• Keep the cabinet clean, dry, and well ventilated.
• Check power wiring before you start the unit.
• Connect Modbus and Modbus+ ports with correct cables.
• Confirm rack count and I/O layout before power on.
• Follow local electrical rules and panel safety standards.
• Use shielded cables where noise is a concern.
• Tighten all terminals to avoid loose contacts.

Commissioning and Maintenance

• Check LED status after power up.
• Verify scan time and communication response.
• Back up logic memory and register data.
• Inspect ports and terminals during routine service.
• Remove dust from the panel regularly.
• Replace damaged cables without delay.
• Keep spare parts for critical shutdown periods.
• Log faults to support faster troubleshooting.

Compatibility Notes

• Works within Schneider Electric Modicon systems.
• Supports Modbus and Modbus+ communication.
• Fits applications with up to four racks.
• Handles local I/O up to 256 points.
• Supports total I/O up to 512/512.
• Check rack, power, and I/O match before purchase.
• Confirm firmware and programming tool support.
• Review existing panel wiring before installation.

Certifications and Compliance

• Confirm current certification status before order.
• Ask our team for available compliance documents.
• Check local rules for industrial control panels.
• Use approved wiring and protection devices.
• Keep records for audits and site checks.

Packing List

• One PC-L984-785 compact CPU
• Protective packing materials
• Order and shipping documents
• Any included accessories from the original package
• Please confirm special requests before shipment

Warranty and Shipping

• Warranty: 12 months
• Dispatch time: 12 to 24 hours
• Couriers: FedEx, UPS, DHL
• Tracking: Shared after dispatch
• Packing: Safe export packaging
• Support: Contact us for urgent orders

Expert Review

The PC-L984-785 is a solid choice for legacy Modicon control systems. Its 24k logic memory and 42k total memory support demanding logic tasks. The 2.5 ms/k scan time helps keep response fast. One Modbus port and one Modbus+ port make system integration easier. With 256 local I/O and 512/512 total I/O, it suits many factory automation needs. The four-rack limit gives useful scale for mid-sized panels. For engineers who value stable control and simple expansion, this compact CPU remains practical and trustworthy.

Manager’s Insight

Buyers often ask for a compact CPU that balances memory, speed, and communication. The PC-L984-785 meets these needs in one module. It fits retrofit projects and existing Modicon setups. Stock moves fast because many sites still use this series. If you need a reliable control brain for discrete manufacturing, process lines, or machine control, this model deserves a close look. Confirm your rack and I/O plan early. That step avoids delays and keeps your project on schedule.

Best Fit Applications and Equipment

• Factory automation lines
• Machine control panels
• Process control systems
• Legacy Modicon upgrades
• Material handling equipment
• Packaging and assembly machines
• Remote I/O setups with Modbus
• Industrial cabinets with limited space

FAQ

Q: What is the logic memory of the PC-L984-785?

A: It offers 24k logic memory for control programs.

Q: How fast is the scan time?

A: The scan time is 2.5 ms per kilobyte.

Q: Which communication ports does it include?

A: It has one Modbus port and one Modbus+ port.

Q: How much local I/O can it support?

A: It supports up to 256 local I/O points.

Q: What is the total I/O capacity?

A: The total I/O capacity is 512/512.

Q: How many racks can it handle?

A: It supports a maximum of four racks.

Q: What is the warranty period?

A: The warranty is 12 months.

Q: How soon do you ship?

A: We dispatch in 12 to 24 hours.

Q: Which couriers do you use?

A: We use FedEx, UPS, and DHL.

Q: Can this CPU work in old Modicon systems?

A: Yes, it belongs to the Modicon series and fits compatible setups.

Q: What should I check before buying?

A: Check rack type, power supply, I/O count, and cable needs.

Q: Do you help with model selection?

A: Yes, send your system details and we will advise.

Q: Is this module good for fast machine control?

A: Yes, its scan time supports quick control response.

Q: What if I need urgent replacement?

A: Contact us early and we will prioritize dispatch.

Buying Guide

• Match the CPU to your existing Modicon rack.
• Check I/O needs before you order.
• Confirm Modbus or Modbus+ communication plans.
• Review panel space and power limits.
• Ask for stock status and lead time.
• Request a quote for bulk or urgent orders.
• Keep the part number ready: PC-L984-785.
• Contact our team for expert support.

Contact Information

• Email: sales@powergearx.com
• Phone / WhatsApp: +86 18030005825

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