Description

Schneider Electric 140CPU11303 Processor Module

Configured for deterministic control execution in Modicon Quantum automation platform, the Schneider Electric 140CPU11303 (80186 Processor Module) provides direct electrical and communication processing across Quantum backplane and Modbus networks.

Hardware Specifications

Parameter	Specification
ModelBrand	Schneider Electric 140CPU11303
Origin	France
Weight	0.3 kg
Dimensions	Not specified in source data
OperatingTemp	0 to 60 degC (derived from clock drift reference condition)
PowerConsumption	Bus current requirement 790 mA
Processor	Intel 80186, 20 MHz
Internal Memory	368 kB RAM
Communication Ports	1 Modbus Plus, 1 Modbus RS232
I/O Capacity	64 I / 64 O local max, 500 I / 500 O distributed
Watchdog Timer	250 ms
Battery	Lithium, 1.2 Ah, 10 year life

Industrial Control Backplane and Network Determinism

The Schneider Electric Modicon Quantum CPU architecture implements backplane bus scheduling aligned with PLC scan cycle execution, enabling deterministic data exchange between processor, I/O racks, and communication modules. Profinet/EtherNet/IP style deterministic behavior is not native to this module; instead, Modbus Plus and Modbus serial layers define cyclic and polled communication timing.

Backplane current draw of 790 mA imposes direct constraints on rack power budgeting and module density scaling. Distributed I/O addressing supports up to 500 I/O words per network segment with up to 63 drops, requiring structured segmentation of remote racks to maintain scan-time stability.

Firmware and application execution is handled via Concept or ProWORX 32 environments, with LL984 execution timing ranging from 0.3 ms to 1.4 ms per instruction depending on logic complexity and scan load.

Frequently Asked Questions

Q: Can the module support hot-swap replacement during runtime?
A: Hot-swap capability is dependent on rack configuration; CPU replacement typically requires controlled system halt due to backplane state retention limits.

Q: What is the impact of backplane current consumption on module expansion?
A: 790 mA CPU consumption reduces available rack power budget, limiting maximum number of high-load communication or I/O modules per chassis.

Q: Is firmware compatible across Concept and ProWORX 32 environments?
A: Both environments can configure LL984 logic; application conversion requires validation due to instruction timing and memory mapping differences.

Field Installation Guidelines

Ensure rack power supply capacity exceeds total backplane load including CPU and all installed modules. Maintain proper grounding of Quantum rack chassis to reduce communication noise on Modbus Plus differential pair wiring.

RS232 and Modbus Plus cabling must be routed separately from high-voltage conductors to avoid induced signal distortion. Lithium battery backup should be installed with correct polarity and verified for voltage retention prior to commissioning.

Backplane connectors must be fully seated to avoid intermittent I/O word corruption during scan cycles. System reset should be performed after module insertion to initialize memory mapping and watchdog timing.

Specifications

• Brand: Schneider Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems