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Siemens 6ES5521-8MA21 SIMATIC S5 CP 521 Communication Processor

Name: Siemens 6ES5521-8MA21
Brand: Siemens
SKU: 6ES5521-8MA21
Availability: InStock

Siemens SIMATIC S5 CP 521 Serial Interface Communication Processor.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

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ManufacturerSiemens

Part number6ES5521-8MA21

Product Communication Processor

Series SIMATIC S5 CP 521

Compatibility S5-90U, S5-95U, S5-100U, ET 200U

Interface Serial

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12-month warranty

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Serial communication interface Designed for SIMATIC S5 For S5-90U/95U/-100U Supports ET 200U Reliable data exchange

Product description

The Siemens 6ES5521-8MA21 is a SIMATIC S5 CP 521 Communication Processor, specifically designed as a serial interface for S5-90U, S5-95U, S5-100U PLCs, and the ET 200U distributed I/O system. It facilitates serial data exchange, enabling communication between the PLC and external devices or other systems.

This communication processor is integral for applications requiring serial data transfer in older Siemens S5 automation systems. Industries such as manufacturing, process control, and building automation that utilize legacy S5 hardware can benefit from its reliable serial communication capabilities.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the 6ES5521-8MA21. Sourcing surplus parts from Stanlo ensures you receive tested, quality components for your industrial automation needs, extending the life of your existing infrastructure.

Technical specifications

Product	Communication Processor
Series	SIMATIC S5 CP 521
Compatibility	S5-90U, S5-95U, S5-100U, ET 200U
Interface	Serial

Common applications

Industrial Automation

PLC Communication

Serial Data Transfer

Legacy System Support

Manufacturing

Process Control

Compatible systems

Siemens SIMATIC S5-90U Siemens SIMATIC S5-95U Siemens SIMATIC S5-100U Siemens ET 200U

Also known as

SIMATIC S5 CP 521 Siemens S5 Communication Module 6ES5 521 8MA21

Replaces / compatible with

This module is part of the Siemens SIMATIC S5 series and is designed for specific PLC systems. It does not directly replace newer modules but facilitates communication within the S5 architecture.

Technical note

Expert tip

Ensure proper termination and baud rate configuration for reliable serial communication with the 6ES5521-8MA21.

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Frequently asked questions

What is the primary function of the Siemens 6ES5521-8MA21?

The Siemens 6ES5521-8MA21 is a Communication Processor (CP 521) for the SIMATIC S5 series. Its main function is to provide a serial interface, enabling communication between the S5 PLC (like the S5-90U, S5-95U, S5-100U) and other devices or systems.