Siemens 6ES5526-3LA21 CP 526 Communications Processor

Siemens 6ES5526-3LA21 Simatic S5 CP 526 Communications Processor

Availability: 10 left in stock

The Siemens 6ES5526-3LA21 is a specialized communications processor module designed for the Simatic S5 PLC product family. This expansion board...

SKU: 6ES5526-3LA21

Manufacturer: Siemens
Product No.: 6ES5526-3LA21
Product Type: Communications Processor
Product Origin: Germany
Payment:T/T, Western Union
Weight: 410g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Siemens 6ES5526-3LA21 is a specialized communications processor module designed for the Simatic S5 PLC product family. This expansion board facilitates advanced data handling, peripheral connectivity, and HMI support within legacy control systems. By offloading communication tasks from the main CPU, the CP 526 ensures that the primary controller maintains optimal scan cycle performance even when managing demanding visualization or external data exchange requirements.

Features

Dedicated onboard processor to manage communication protocols independently of the PLC CPU.
Designed for integration into Simatic S5 backplane architectures.
Supports serial connectivity for operator panels, printers, and peripheral devices.
Optimized for stable, long-term operation in industrial environments such as power generation and heavy manufacturing.
Autonomous firmware handling for data blocks and text string management.

Applications

This module is frequently deployed in mature automation systems requiring reliable interface expansion. Typical applications include the management of operator display screens, data logging, and point-to-point serial communications in legacy S5-based control setups.

Technical Specifications

Model	6ES5526-3LA21
Brand	Siemens
Series	Simatic S5
Module Type	Communications Processor (CP)
Operating Temperature	0 to 55 deg C
Storage Temperature	-40 to 70 deg C
Relative Humidity	95% non-condensing
Input Voltage	5 VDC (via backplane)
Current Consumption	1.2 A typical

Installation Guidelines

Ensure the PLC rack is powered down before inserting or removing the CP 526 module to prevent electrical damage.
Verify proper seating in the designated S5 backplane slot to ensure reliable bus contact.
Maintain adequate ventilation within the cabinet to stay within the 0 to 55 deg C operating range.
Follow standard ESD precautions when handling the module to protect sensitive internal circuitry.
Ensure all serial cables are properly shielded and routed away from high-voltage power lines to minimize EMI interference.

FAQ

Is this module compatible with all S5 systems?

The 6ES5526-3LA21 is designed for specific Simatic S5 backplane configurations. Please verify your existing rack and CPU compatibility via your system documentation before installation.

Does this module require external power?

No, the unit receives its 5 VDC power supply directly from the S5 backplane bus during standard operation.

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