11 in stock
Schneider Electric PC-E984-381 Modicon 984 CPU Module
Schneider Electric PC-E984-381 Modicon 984 CPU Module
Brand/Manufacturer: Schneider Electric
Order Number: PC-E984-381
Type: PLC CPU Modules
Country of Origin: France
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Schneider Electric PC-E984-381 (also designated as Model 381E) is a programmable logic controller CPU module designed for mid-range automation within the Modicon 984 platform. Powered by a 16-bit processor, the module features 16K words of user logic memory alongside 1,920 state registers, providing a total memory capacity of 18K words for program execution and data handling. The PC-E984-381 integrates an internal power supply and dual Modbus serial ports into a single modular assembly designed to mount into Modicon 800 series housing structures.
Integrated Power Supply and Hardware Architecture
The PC-E984-381 integrates a dual-input power supply section directly on the module assembly. It accepts broad AC line voltages ranging from 97 VAC to 276 VAC (47–63 Hz) as well as a 24 VDC auxiliary or continuous power input. Primary AC power is toggled via a front-panel rocker switch. The unit communicates across a shielded rack backplane designed to mitigate electromagnetic interference (EMI) and radio frequency interference (RFI) in factory floor environments. Front-panel LED status indicators provide immediate feedback for Power OK, Ready, Run mode, Battery Low, and Modbus port activity.
Serial Communication and I/O Capacity
Equipped with two dedicated Modbus serial communication ports, the PC-E984-381 supports simultaneous networking and local maintenance connections. One port can remain permanently linked to host computers, HMIs, or distributed control networks while the secondary port serves programming terminals or diagnostic tools. The CPU handles up to 512 discrete local I/O points and 512 total I/O bits across compatible Modicon 800 series I/O housings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PC-E984-381 (Model 381E) |
| Brand | Schneider Electric / Modicon |
| Product Type | PLC CPU & Power Supply Module |
| Architecture | 16-bit CPU (24-bit memory architecture) |
| Logic Execution Speed | 2.5 ms per 1,000 nodes |
| User Logic Memory | 16K words |
| State Registers | 1,920 registers |
| Total Memory | 18K words |
| Local I/O Capacity | 512 discrete I/O points |
| Operating Voltage Options | 97–276 VAC (47–63 Hz) / 24 VDC |
| Serial Interfaces | 2 x Modbus ports |
| System Compatibility | Modicon 984 / 800 Series |
| Weight | 2.80 lbs (approx. 1.27 kg) |
Functional Features and Logic Processing
The PC-E984-381 executes standard Modicon 984 instruction sets at a nominal processing speed of 2.5 ms per thousand nodes of user logic. Internal CMOS RAM retains application logic and dynamic registers via battery backup. Executive system firmware resides in non-volatile PROM memory, ensuring system recovery following extended power outages. An onboard time-of-day clock is standard for event logging and time-stamped control routines.
Frequently Asked Questions
Q: How do the two Modbus ports function on the PC-E984-381?A: The dual Modbus ports allow the controller to maintain continuous communication on a master Modbus network via one port while leaving the second port open for local programming panels or host device connections.
Q: What power sources can be used to run the PC-E984-381 CPU module?A: The module accepts a wide AC input range from 97 VAC to 276 VAC (47 to 63 Hz) switched via a front panel rocker, and it can also run continuously on 24 VDC as an auxiliary or sole power source.
Q: What housing and I/O platform is compatible with this model?A: The PC-E984-381 is designed
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Testimonials
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We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
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Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
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We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson