Product Introduction
When communication failures interrupt production, the Siemens 6ES7340-1BH02-0AE0 ensures stable data exchange in demanding industrial environments. This CP 340 communications processor is part of the SIMATIC S7-300 family and provides a dedicated 20 mA (TTY) interface for point-to-point serial communication. The Siemens 6ES7340-1BH02-0AE0 includes a configuration package on CD, simplifying setup and integration.
Technical Specifications
Below are the key technical parameters of the Siemens 6ES7340-1BH02-0AE0, derived from official product data:
| Parameter |
Value |
| Product type designation |
CP 340 |
| Supply voltage |
5 V DC via backplane bus (24 V DC not supported) |
| Input current from backplane bus (5 V DC), max |
190 mA |
| Power loss, typ. |
0.85 W |
| Power loss, max. |
0.95 W |
| Interface type |
20 mA (TTY), isolated |
| Number of interfaces |
1 |
| Transmission rate, min. |
2.4 kbit/s |
| Transmission rate, max. |
19.2 kbit/s |
| Cable length, max. |
1,000 m (passive), 100 m (active) |
| Connector type |
9-pin sub D socket |
| Integrated protocol drivers |
3964(R), ASCII |
| Max. telegram length (3964(R) and ASCII) |
1,024 bytes |
| 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 |
Industry Applications
The Siemens 6ES7340-1BH02-0AE0 excels in scenarios requiring robust serial communication over long distances. Typical applications include connecting S7-300 controllers to remote I/O devices, printers, or operator panels. The isolated 20 mA TTY interface minimizes ground loop issues, making it ideal for electrically noisy environments. For example, in a process plant where a PLC must communicate with a barcode scanner situated 800 meters away, the Siemens 6ES7340-1BH02-0AE0 reliably transmits data at up to 19.2 kbit/s.
Installation & Setup Guidance
Installing the Siemens 6ES7340-1BH02-0AE0 is straightforward. The module mounts directly onto the S7-300 backplane bus, which provides the required 5 V DC supply. Ensure the slot supports CP 340 modules. Connect the serial device using a 9-pin sub D cable. For initial configuration, use the included CD to set the communication parameters (baud rate, protocol, printer type). Always follow Siemens' guidelines for cable routing to avoid interference.
Compatibility & Integration
The Siemens 6ES7340-1BH02-0AE0 integrates seamlessly with SIMATIC S7-300 CPUs. It supports the 3964(R) and ASCII protocols for flexible data exchange. Additionally, it provides printer drivers for HP-Deskjet, HP-Laserjet, IBM-Proprinter, and user-defined printers. The module handles telegrams up to 1,024 bytes, making it suitable for medium-sized data packets. For advanced applications, remember that customer-specific drivers are not reloadable; the module relies on its built-in protocols.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6ES7340-1BH02-0AE0, verify that your S7-300 system has an available slot and that the backplane bus can supply the required 190 mA. Ensure your communication device uses a 20 mA TTY interface; otherwise, a converter may be needed. For reliable supply of genuine Siemens modules, contact PLC Source PRO via ubest101.myshopify.com. Our team ensures fast delivery and product authenticity.