This compact CPU module delivers robust processing capabilities for small to medium-scale automation applications. It executes user programs with efficiency and precision for reliable machine control. We engineered the Schneider PCBALU204 specifically for the Modicon Compact family of programmable controllers. This module integrates processing power, memory, and communication ports into a single unit. It ensures deterministic scan cycles for time-sensitive control tasks. Therefore, your compact automation system achieves optimal performance without excessive hardware overhead.
Physical Configuration and Mounting Specifications
The Schneider PCBALU204 features a compact modular design for panel mounting. Its dimensions measure 140.0 mm in height, 70.0 mm in width, and 120.0 mm in depth. The module weighs approximately 0.55 kilograms for straightforward installation procedures. This unit mounts securely onto standard DIN-rail profiles. It connects to I/O modules via the Modicon Compact system bus. The processor provides comprehensive LED indicators for operational monitoring.
Processing Capabilities and Memory Architecture
This CPU module operates with a powerful 16-bit microprocessor architecture. It delivers fast instruction execution for responsive machine control. The Schneider PCBALU204 provides 16 KB of user memory for program and data storage. It utilizes internal RAM with battery backup for reliable program retention. The module supports ladder logic and function block programming languages. It includes a built-in real-time clock for scheduled operations. Consequently, this offers complete control functionality within a compact footprint.
Detailed Technical Specifications and Interface Details
We outline the module’s comprehensive technical parameters and operational capabilities below.
| Specification | Detail |
|---|---|
| Part Number | Schneider PCBALU204 |
| Product Category | Compact CPU Module |
| Dimensions (H x W x D) | 140.0 mm x 70.0 mm x 120.0 mm |
| Module Weight | Approximately 0.55 kg (1.21 lbs) |
| CPU Architecture | 16-bit microprocessor |
| User Memory | 16 KB RAM (battery-backed) |
| Memory Backup | Replaceable lithium battery |
| Programming Language | Ladder logic, function block, instruction list |
| Bit Processing Time | 1.2 µs per bit operation |
| Maximum I/O Capacity | 256 digital I/O points |
| Maximum Analog I/O | 16 analog I/O channels |
| Integrated Functions | Real-time clock, watchdog timer, interrupts |
| Communication Interface | RS-232 serial port (programming) |
| Communication Protocol | Modbus RTU |
| Additional Interface | PCMCIA slot for memory cartridge |
| Diagnostic Indicators | RUN, STOP, ERR, BAT status LEDs |
| Bus Interface | Modicon Compact backplane |
| Power Supply Voltage | 24 VDC nominal (19.2 to 28.8 VDC) |
| Power Consumption | 4 W typical |
| Battery Backup Duration | Approximately 1 year minimum |
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
| Storage Temperature | -25°C to 70°C (-13°F to 158°F) |
| Ingress Protection | IP20 |
| Compliance | CE, UL, CSA, RoHS |
Details
| Weight | 0.55 kg |
|---|---|
| Dimensions | 140 × 70 × 120 mm |
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