6ES7440-1CS00-0YE0 Siemens CP 440-1 Comm Module | Point-to-Point RS422

Product Overview

• Siemens 6ES7440-1CS00-0YE0 – CP 440-1 communications module for SIMATIC S7-400
  • Point-to-point connection with 1 channel
  • Supports RS 422/RS 485 (X.27) physical interface
  • Integrated 3964 (R) and ASCII protocol drivers
  • Configuration package included on CD

Technical Specifications

• Brand & Model
  • Brand: Siemens
  • Model: 6ES7440-1CS00-0YE0
  • Product type: CP 440-1 Communications Module
  • Series: SIMATIC S7-400
• Power Supply
  • 5V DC supply: Yes
  • 24V DC supply: Yes
  • Backplane bus current: 360 mA max at 5V DC
  • Power loss: 1.7 W typical
• Memory Requirements
  • Parameters storage: 1 to 5 KB per interface
  • Stored on S7-CPU memory card
• Interface & Communication
  • Number of interfaces: 1
  • Physical interface: RS 422/485 (X.27)
  • Shielded cable length: 1200 m max
  • Transmission rate: 115.2 kbps max
  • Protocols: 3964 (R) and ASCII
• Configuration
  • Software: STEP 7 (V5.x or higher)
  • Own parameter assignment forms included
  • Configuration package on CD
• Dimensions & Weight
  • Width: 25 mm (0.98 in)
  • Height: 290 mm (11.42 in)
  • Depth: 210 mm (8.27 in)
  • Weight: 600 g (1.32 lbs)

Expert Review / Manager’s Insight

• The 6ES7440-1CS00-0YE0 handles point-to-point serial communication reliably.
• Its single channel design works best for dedicated communication links.
• Use this module when connecting barcode scanners, printers, or weighing scales.
• The 3964 (R) protocol ensures robust data transfer with error checking.
• ASCII mode offers simple integration with third-party serial devices.
• Maximize cable length up to 1200 meters with shielded RS422 wiring.

Typical Applications

• Best suited for
  • Barcode reader connections in logistics systems
  • Printer communication for production reporting
  • Weighing scale data capture in process industries
  • Legacy device integration with serial interfaces
  • Remote data collection via RS485 multi-drop networks

Installation & Wiring

• Mounting
  • Install in S7-400 rack (UR1, UR2, UR2-H)
  • Use any available slot from 4 to 11
  • Secure with fixing screws at top and bottom
• Wiring tips
  • Use shielded twisted-pair cable for RS422/485
  • Connect shield at both ends for best noise immunity
  • Terminate the cable at both ends for RS485 multi-drop
  • Keep serial cables away from high-voltage power lines

Compatibility

• Works with
  • Siemens S7-400 CPUs (all versions)
  • STEP 7 programming software (V5.5+)
  • RS422 and RS485 compatible devices
• Protocol support
  • 3964 (R) – Siemens standard protocol
  • ASCII – universal serial communication
  • Custom protocols possible via ASCII mode

Package Contents

• Includes
  • 1x 6ES7440-1CS00-0YE0 CP 440-1 module
  • 1x configuration CD with parameter forms
  • 1x front connector (screw type)
  • 1x label strip for identification

Warranty & Shipping

• 12-month warranty against manufacturing defects
• 12-24 hour dispatch for in-stock items
• Shipping options: FedEx, UPS, DHL

Comparison with Similar Models

• 6ES7440-1CS00-0YE0 – 1 channel, RS422/485, 115.2 kbps, 1200m
• 6ES7440-1CS00-0YE0 – Compare current model (this page)
• 6ES7440-1CS00-0YB0 – 1 channel, RS232, 115.2 kbps
• 6ES7440-1CS00-0YA0 – 1 channel, RS422/485, 19.2 kbps
• 6ES7441-1CS00-0YE0 – CP 441-1, 1 channel, universal serial

Frequently Asked Questions

• Q: What is the difference between 3964 (R) and ASCII protocols?
  • A: 3964 (R) includes error checking and retry mechanisms. ASCII protocol offers simple character-based communication.
• Q: How far can I run the RS422 cable?
  • A: Maximum cable length is 1200 meters with shielded RS422 wiring.
• Q: Can I connect multiple devices to one channel?
  • A: Yes, using RS485 multi-drop mode you can connect up to 32 devices on one line.
• Q: What software do I need to configure this module?
  • A: Use STEP 7 V5.5 or higher. The configuration package is included on the CD.
• Q: Does this module work with non-Siemens devices?
  • A: Yes, use ASCII protocol to communicate with any serial device that supports it.
• Q: What happens if I lose communication with the device?
  • A: The module will report a communication error to the CPU. Your program can handle this via error diagnostics.

Buying Guide & Selection Advice

• Choose 6ES7440-1CS00-0YE0 if you need one point-to-point serial channel.
• Need two channels? Consider 6ES7441-2CS00-0YE0 (CP 441-2).
• For RS232 devices, select 6ES7440-1CS00-0YB0 instead.
• Check your baud rate: this module supports up to 115.2 kbps.
• Always use shielded cable for runs longer than 50 meters.
• Plan your cable routing before installation to avoid noise issues.

Contact & Support

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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