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Serial Data Exchange for SIMATIC S5 Systems
The Siemens C79458-L2343-A2 communication module enables serial data exchange between SIMATIC S5 programmable controllers and peripheral devices. This module supports both point-to-point and multi-point communication protocols for versatile connectivity. It connects to printers, barcode scanners, operator terminals, and other serial equipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | C79458-L2343-A2 |
| Series | SIMATIC S5 |
| Product Type | Communication Module / Serial Interface Module |
| Interface | RS-232C (V.24) |
| Connector | 15-pin D-Sub |
| Data Transfer Rate | 50 to 9600 baud (selectable) |
| Transmission Mode | Full-duplex and half-duplex |
| Protocol Support | Point-to-point, multi-point, 20mA current loop |
| Number of Addressable Stations | Up to 32 (multi-point mode) |
| Power Supply | 5V DC via backplane bus |
| Current Consumption | 5V DC / 200mA (max) |
| Operating Temperature | 0°C to 60°C |
| Weight | 0.3 kg |
| Dimensions (W x H x D) | 25 x 120 x 116.4 mm |
| Protection Rating | IP20 |
Versatile Communication Capabilities
The Siemens C79458-L2343-A2 supports both point-to-point and multi-point modes for flexible system integration. In multi-point mode, it addresses up to 32 stations, enabling communication with multiple devices. The module also supports 20mA current loop for legacy equipment compatibility.
Configurable Data Rates
Engineers can select data transfer rates from 50 to 9600 baud to match connected devices. This flexibility ensures compatibility with a wide range of third-party equipment. Additionally, the full-duplex mode enables simultaneous data transmission and reception for efficient communication.
Integration and Installation
This module installs directly into S5-100U and S5-95U rack systems via the backplane bus. The 15-pin D-Sub connector provides standard serial connectivity for easy wiring. Its compact 25mm width and 0.3 kg weight also facilitate installation in dense configurations.
Application Environments
The module serves various applications requiring data exchange, including barcode reading and label printing. It also connects S5 controllers to weigh scales, measuring instruments, and operator panels. The 0°C to 60°C temperature range covers most indoor automation environments.