6ES7478-2DX00-0AA0 SIEMENS Processor module

Description

6ES7478-2DX00-0AA0 SIEMENS Processor module

Product Dimensions：

Product Description

The 6ES7478-2DX00-0AA0 is a highly specialized component within the SIMATIC S7-400 series. Specifically, it is a Point-to-Point (PtP) Interface Module (part of the interface sub-modules used in high-end automation). It is designed to facilitate serial communication between an S7-400 system and external devices such as printers, barcode scanners, or non-Siemens controllers.

Product Parameters

Key Product Advantages

• High Performance: Built for the S7-400 platform, it handles heavy communication loads without taxing the main CPU’s processing power.

• Flexibility: Supports multiple serial protocols, allowing the Siemens PLC to communicate with “legacy” equipment or third-party hardware that does not support industrial Ethernet.

• Hot-Swappable: As part of the S7-400 system, these modules often support “Hot Swapping” (inserting/removing under power) if the rack and CPU configuration allow, minimizing system downtime.

• Galvanic Isolation: Provides electrical isolation between the PLC and the external communication line, protecting the expensive controller from surges.

Critical Usage Notes & Precautions

1. Submodule Slot: This is often an IF-module (Interface Module). It is typically inserted into a specific slot on a communication processor (like a CP 441) or a CPU that has an interface expansion slot. It is not a standalone rack module.

2. Cable Shielding: Because RS485/422 is sensitive to electromagnetic interference (EMI) over long distances, high-quality shielded cables must be used.

3. Termination: Ensure that proper bus termination resistors are applied if using the RS485 configuration to prevent signal reflection.

4. Firmware Compatibility: Ensure your Step 7 or TIA Portal hardware configuration matches the exact version of the module to avoid configuration errors.

Product Applications

The 6ES7478-2DX00-0AA0 is typically found in large-scale industrial plants:

• Data Logging: Connecting the PLC to serial printers for automated report generation or error logging.

• Peripheral Integration: Interfacing with weighing scales, barcode readers, or RFID scanners in logistics.

• Legacy Integration: Communicating with older CNC machines or motor drives that only offer RS422/485 ports.

• Infrastructure: Used in power plants or water treatment facilities for MODBUS serial communication (with additional driver blocks).

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