Siemens 6ES7340-1BH00-0AE0 Communication Processor

High-Performance Serial Communication Module for S7-300 Systems

The Siemens 6ES7340-1BH00-0AE0 serves as a dedicated communication processor for the SIMATIC S7-300 programmable controller platform. This module handles serial data exchange with external devices using RS-232C and TTY interfaces. Its compact housing measures 125 mm in height, 40 mm in width, and 120 mm in depth, fitting standard S7-300 rack slots. The total weight reaches approximately 0.3 kg, making it a lightweight addition to control systems.

This communication processor supports point-to-point connections with protocols such as 3964(R) and RK512. The following table details the complete technical specifications for this serial communication solution:

Parameter	Specification
Product Brand	Siemens
Product Model	6ES7340-1BH00-0AE0
Product Category	Communication Processor
Platform Compatibility	SIMATIC S7-300
Communication Interfaces	RS-232C, TTY (20 mA)
Supported Protocols	3964(R), RK512
Baud Rate	1200 to 19200 bps (configurable)
Data Format	7/8 data bits, 1/2 stop bits
Parity	None, even, odd
Connection Type	Point-to-point
Dimensions (H x W x D)	125 mm x 40 mm x 120 mm
Weight	0.3 kg
Supply Voltage	5 V DC (from backplane)
Power Consumption	2.0 W typical
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C

Connectivity and Protocol Support

The 6ES7340-1BH00-0AE0 connects to serial devices such as barcode readers, printers, and third-party controllers. RS-232C and TTY interfaces accommodate a wide range of legacy equipment. The module supports the 3964(R) and RK512 protocols for reliable data exchange. This flexibility ensures seamless integration with existing serial-based systems.

Configurable Communication Parameters

Users can adjust baud rates from 1200 to 19200 bps to match connected devices. The data format supports 7 or 8 data bits and 1 or 2 stop bits as needed. Parity options include none, even, or odd. Engineers can therefore configure the module for virtually any serial communication requirement.

System Integration and Diagnostic Features

The module integrates directly into the S7-300 backplane for simple installation. Diagnostic LEDs provide immediate visual feedback on communication status. The processor supports online parameter adjustments during operation. Maintenance teams benefit from straightforward troubleshooting and configuration capabilities.