This controller module provides powerful processing capabilities for the Modicon A500 series. It executes complex control algorithms for continuous and batch processes. The unit handles both logic control and regulatory functions simultaneously. Its advanced architecture supports demanding industrial automation applications.
Processing Architecture and Memory Configuration
The controller features a high-speed processor optimized for process control tasks. It stores application programs and configuration data in onboard memory. The unit supports multiple program tasks for different control priorities. A dedicated coprocessor handles floating-point calculations efficiently.
| Parameter | Specification |
|---|---|
| Model | ALU 071 |
| Processor Type | 16-bit MCU, 24 MHz |
| Program Memory | 64 KB RAM |
| Storage Memory | 32 KB flash |
| Retentive Memory | 8 KB EEPROM |
| Processing Speed | 0.5 µs per bit instruction |
| Floating-Point Speed | 2.0 µs per operation |
| Max Digital I/O Points | 2048 |
| Max Analog Channels | 128 |
| Number of Tasks | 8 priority levels |
| Communication Ports | 1 x RS-232C, 1 x RS-422/485 |
| Power Supply | 24 V DC ±10%, 500 mA |
| Power Consumption | 12 W maximum |
Physical Dimensions and Rack Mounting
This controller measures 160 mm in height, 80 mm in width, and 140 mm in depth. Its heavy-duty housing weighs approximately 1.1 kg. You can mount the unit in a Modicon A500 series rack. The module occupies two slots for ample component spacing.
Communication and Network Interfaces
The ALU 071 includes two serial ports for versatile connectivity. One RS-232C port connects to programming terminals and HMIs. The RS-422/485 port supports multi-drop networking with remote devices. The unit also interfaces with fieldbus adapters for expanded networks.
Programming Capabilities and Languages
You can program the controller using ladder logic and structured text. The unit also supports function block diagrams for process control. Instruction lists provide additional programming flexibility. The module stores multiple program files for different applications.
Battery Backup and Data Integrity
A lithium battery maintains program memory for up to three years. This battery also powers the real-time clock during power outages. The module includes automatic checksum verification for memory integrity. You can replace the battery without losing stored programs.
Application Scenarios and System Compatibility
This controller suits water treatment, material handling, and packaging applications. It works with all Modicon A500 series I/O modules. The unit also supports third-party devices through standard interfaces. You can integrate it into existing Modicon systems easily.
Details
| Weight | 0.45 kg |
|---|---|
| Dimensions | 130 × 100 × 45 mm |
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