Product Introduction
When reliable serial communication is critical in your Siemens S7-300 system, the Siemens 6ES7340-1CH02-0AE0 CP 340 Communications Processor delivers robust RS 422/485 connectivity with integrated protocol support. This module is designed as a direct replacement or upgrade for older CP340 units, offering improved reliability and ease of integration into existing automation networks.
The Siemens 6ES7340-1CH02-0AE0 includes a configuration package on CD and supports multiple communication protocols, making it a versatile choice for point-to-point connections, printer interfacing, and data exchange with other controllers.
Technical Specifications Breakdown
The Siemens 6ES7340-1CH02-0AE0 features a compact design with key parameters optimized for industrial environments. Below are the essential specifications drawn from the product datasheet:
| Parameter |
Value |
| Supply voltage (rated) |
5 V DC via backplane bus |
| Input current from backplane bus (max.) |
165 mA |
| Power loss (typ.) |
0.6 W |
| Power loss (max.) |
0.85 W |
| Interfaces |
1 x RS 422/485 (X.27), isolated |
| Transmission rate (min.) |
2.4 kbit/s |
| Transmission rate (max.) |
19.2 kbit/s |
| Cable length (max.) |
1,200 m |
| Connector type |
15-pin sub D socket |
| Supported protocols |
3964(R), ASCII, printer drivers (HP-Deskjet, HP-Laserjet, IBM-Proprinter, user-defined) |
| Telegram length (max., 3964(R) and ASCII) |
1,024 byte |
| FB length in RAM (max.) |
2,700 byte |
| Ambient temperature (operation) |
0 °C to 60 °C |
| Ambient temperature (storage/transport) |
-40 °C to 70 °C |
| Dimensions (W x H x D) |
40 mm x 125 mm x 120 mm |
| Weight (approx.) |
300 g |
These specifications ensure the Siemens 6ES7340-1CH02-0AE0 operates efficiently with minimal power consumption, making it a cost-effective upgrade over older communications processors.
Application Scenarios
The Siemens 6ES7340-1CH02-0AE0 excels in a variety of industrial serial communication tasks. Typical applications include:
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Printer Connectivity: Connect to HP-Deskjet, HP-Laserjet, or IBM-Proprinter printers for data logging and report generation in manufacturing cells.
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Point-to-Point Communication: Enable reliable data exchange between S7-300 controllers and remote I/O stations or barcode scanners using RS 422/485 with 3964(R) protocol at up to 19.2 kbit/s.
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Legacy System Upgrades: Replace older CP340 modules (such as 6ES7340-1CH02-0AE0's predecessor) to gain improved protocol support and lower power dissipation while maintaining form-fit compatibility.
Installation & Setup Guidance
Installing the Siemens 6ES7340-1CH02-0AE0 is straightforward. The module mounts directly into any S7-300 rack and receives power via the backplane bus (5 V DC). The 15-pin sub D socket provides a secure connection for RS 422/485 cables. Ensure proper termination for long cable runs up to 1,200 m. Use the included configuration CD to set protocol parameters (3964(R), ASCII, or printer driver) and Telegram lengths. No external power supply is required.
Compatibility & Integration
The Siemens 6ES7340-1CH02-0AE0 is fully compatible with all Siemens S7-300 CPUs. It supports the 3964(R) and ASCII protocols natively, and can drive standard printers via the built-in printer driver. The module's isolated RS 422/485 interface ensures noise immunity in harsh industrial environments. For advanced configurations, the FB length of up to 2,700 bytes allows flexible data handling.
Selection Guide & Purchasing Advice
When selecting the Siemens 6ES7340-1CH02-0AE0, verify that your S7-300 CPU firmware and rack backplane support this revision. For large networks, consider cable length and baud rate requirements (up to 19.2 kbit/s). The module is an excellent choice for upgrading existing serial communication nodes without changing hardware infrastructure. For reliable supply and fast delivery, choose PLC Source PRO (visit us at ubest101.myshopify.com) – we stock genuine Siemens modules with traceable stock.