Product Overview
The Siemens 6ES5526-3LA21 functions as a dedicated communications expansion board for the S5 series PLC family. This module adds extra processing capacity for serial data exchange tasks. Industrial engineers rely on this board for complex automation networking requirements.
Core Technical Specifications
This expansion board integrates directly into the S5 central rack system. The Siemens 6ES5526-3LA21 supports multiple communication protocols for flexible system integration. Its hardware design includes onboard memory for efficient data buffering and transfer.
| Parameter | Specification |
|---|---|
| Product Type | Communications Expansion Board (CP 526) |
| Series Compatibility | Siemens S5 Series PLC |
| Dimensions (W x H x D) | 25 mm x 290 mm x 210 mm |
| Weight | Approximately 0.55 kg |
| Interface Type | 15-pin D-sub connector (RS-232C / RS-422 / RS-485) |
| Number of Channels | 2 independent serial ports |
| Memory | 8 KB buffer RAM for data storage |
| Energy Storage | Onboard capacitor maintains settings during brief power dips |
| Baud Rate | Up to 38.4 kbps (software-selectable) |
| Operating Voltage | 5 V DC from backplane bus |
| Power Consumption | Maximum 0.5 A |
| Operating Temperature | 0°C to +60°C |
Functional Capabilities
The board handles point-to-point communication with external devices like printers or operator panels. Furthermore, the Siemens 6ES5526-3LA21 manages data exchange with upper-level computer systems efficiently. Its dual-channel architecture enables simultaneous connections to different peripheral equipment types. The onboard processor relieves the main CPU from communication overhead tasks.
Integration and Deployment
Users install this board into any free S5 series expansion rack slot. The Siemens 6ES5526-3LA21 requires no external power supply since it draws energy from the backplane. Moreover, its configurable interface parameters adapt to diverse field device requirements. System integrators appreciate its plug-and-play recognition within STEP 5 programming environments.
Application Areas
Manufacturing plants commonly deploy this module for machine-to-machine data linking. Besides that, it serves well in process monitoring and remote diagnostic applications. The board excels where reliable serial communication remains essential for production continuity.
Details
| Weight | 0.55 kg |
|---|---|
| Dimensions | 25 × 290 × 210 mm |
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