PLCs, Power Supplies & Others

The Siemens 6ES5526-3LG0 handles serial data exchange for SIMATIC S5 systems. This module belongs to the CP526 communications processor family. You will find this board in legacy factory networks and data collection applications. It connects S5 PLCs to printers, scanners, and host computers.

Manufacturer: Siemens
Series: SIMATIC S5
Category: Communications Processor (CP526)

Physical Dimensions and Weight

The Siemens 6ES5526-3LG0 measures 12.0 inches in length. Its width reaches 1.6 inches for single-slot occupancy. The board thickness sits at 5.5 inches including components. This standard form factor fits into any S5 series rack. The total weight comes to approximately 0.55 kilograms.

Technical Specifications and Communication Capabilities

This communications processor features one RS-232 serial interface. It supports baud rates from 300 to 19,200 bits per second. The module stores incoming and outgoing data in a 64KB buffer. It handles both ASCII and 3964R communication protocols. Furthermore, the processor manages data transfers without CPU intervention.

Data Processing and Energy Storage

The Siemens 6ES5526-3LG0 includes an onboard 8-bit microprocessor. This processor offloads communication tasks from the main CPU. The module uses a capacitor array for data buffering during power dips. These capacitors hold 4,700 microfarads of energy storage. Therefore, you lose no data during brief power interruptions.

Interface and Connectivity

This communications processor provides a 9-pin D-sub connector on the front panel. The module supports full-duplex communication for simultaneous send and receive. Four LED indicators show transmit, receive, error, and power status. A 6-position DIP switch configures protocol and baud rate settings. You can connect directly to a PC serial port without special cables.

Component Layout and Processing Architecture

The Siemens 6ES5526-3LG0 contains 135 discrete components on a six-layer PCB. Key parts include the communication processor chip and 16 memory ICs. The architecture divides into three functional blocks. The first block handles physical layer signal conditioning. The second block manages protocol processing and buffering. The third block interfaces with the S5 backplane.

Integration and Compatibility

Use the Siemens 6ES5526-3LG0 with any S5 CPU module. It works alongside 6ES5516-3LG0 or 6ES5546-3LG0 communication modules. This processor supports all standard S5 programming software packages. For similar industrial control solutions, explore the RMS-TSG-TZ-C Static Trip device [link removed per instruction]. Order this original Siemens CP to add serial connectivity to your S5 system.

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