Product Overview
The Siemens 6ES7440-1CS00-0YE0 is a SIMATIC S7-400 CP 440-1 communications module designed for point-to-point connections. This single-channel module includes a configuration package on CD, enabling seamless integration into industrial control systems. With low power loss of just 1.7 W, it helps reduce operational costs while delivering reliable data exchange. The Siemens 6ES7440-1CS00-0YE0 is ideal for applications demanding stable serial communication over RS 422/485 interfaces.
Technical Specifications Breakdown
Key technical parameters of the Siemens 6ES7440-1CS00-0YE0 are listed below. All values are taken directly from the product datasheet.
| Parameter |
Value |
| Supply voltage (DC rated) |
5 V DC and 24 V DC |
| Input current from backplane bus (5 V DC, max) |
360 mA |
| Power loss, typ. |
1.7 W |
| Memory requirements per interface in memory card of S7-CPU |
1 to 5 Kbytes for parameters |
| Number of interfaces |
1 |
| Interface (physical) |
RS 422/485 (X.27) |
| Cable length, shielded, max. |
1200 m |
| Integrated protocol drivers |
3964 (R) and ASCII |
| Transmission rate (with 3964 (R) protocol, max) |
115.2 kbit/s |
| Transmission rate (with ASCII protocol, max) |
115.2 kbit/s |
| Configuration software |
STEP 7 (own parameter assignment forms) |
| Width |
25 mm |
| Height |
290 mm |
| Depth |
210 mm |
| Weight, approx. |
600 g |
The Siemens 6ES7440-1CS00-0YE0 supports dual voltage input, making it flexible for various backplane configurations. Its low current draw reduces strain on the bus, contributing to overall system longevity.
Compatible Systems and Integration
The Siemens 6ES7440-1CS00-0YE0 communicates via RS 422/RS 485, supporting long cable runs up to 1200 meters. It integrates with SIMATIC S7-400 CPUs using STEP 7 software. The module includes protocol drivers for 3964 (R) and ASCII, enabling connection to a wide range of serial devices such as printers, scanners, and remote I/O. This compatibility ensures easy integration into existing automation architectures.
Installation and Setup Guidance
Mount the Siemens 6ES7440-1CS00-0YE0 directly into the S7-400 rack. Ensure correct bus connector alignment and secure the module with the locking screws. Use shielded twisted-pair cable for RS 422/485 connections to minimize electromagnetic interference. Configure the module via the included CD or through STEP 7 parameter assignment forms. Set protocol, baud rate, and data format according to the connected device’s requirements. Always verify cable termination resistors for long-distance links.
Maintenance and Reliability
The Siemens 6ES7440-1CS00-0YE0 requires minimal routine inspection. Periodically check cable connections for corrosion or looseness. Keep the module’s ventilation slots clear to ensure proper cooling. With a typical power loss of only 1.7 W, heat generation is low, extending component life. Following these basic practices maximizes uptime and delivers a strong return on investment by reducing unplanned maintenance costs.
Selection Guide and Purchasing Advice
Before purchasing the Siemens 6ES7440-1CS00-0YE0, confirm that your S7-400 chassis has an available slot and that the bus current budget can supply the required 360 mA. Verify the serial parameters of your target device to ensure protocol compatibility. For reliable supply, trust PLC Source PRO. You can find this module on ubest101.myshopify.com, a trusted source for industrial automation spares.