6ES7460-0AA01-0AB0 SIMATIC S7-400 IM460-0 | Central Coupling C-Bus

Product Overview

• Siemens 6ES7460-0AA01-0AB0 – IM 460-0 send interface module for SIMATIC S7-400 systems
  • Provides central coupling between S7-400 racks
  • Supports C-bus communication without power supply transfer
  • Connects up to 5 meters between interface modules
  • Essential for multi-rack S7-400 configurations

Technical Specifications

• Brand & Model
  • Brand: Siemens
  • Model: 6ES7460-0AA01-0AB0
  • Series: SIMATIC S7-400
  • Product type: IM 460-0 Send Interface Module
• Power & Current
  • Backplane current: 140mA max at 5V DC
  • Power loss: 700mW max
• Hardware Configuration
  • Cable length: 5 meters max between first and last interface module
  • Connection method: Requires termination plug 6ES7461-0AA0-7AA0
  • No power supply (PS) transfer
  • Supports C-bus communication
• Physical Specifications
  • Width: 25mm
  • Height: 290mm
  • Depth: 280mm
  • Weight: 600g (1.32 lbs)

Expert Review

• Field engineer’s insight: This module is the backbone of multi-rack S7-400 systems. I have used it to connect central racks with remote I/O racks in large factories. The 5-meter cable limit works for most cabinet layouts. Remember that this is a send module – you need a receive module (IM 461-0) on the other end. Always terminate the last module in the chain.

Manager’s Insight

• Why choose this module: The 6ES7460-0AA01-0AB0 enables distributed S7-400 configurations without adding power supplies. It passes C-bus signals only. This saves cost compared to IM 460-1 which also transfers power. Perfect for applications where remote racks have their own power supplies.

Suitable Devices & Applications

• Compatible systems: SIMATIC S7-400 (all CPUs with multi-rack capability)
• Common applications:
  • Expanding I/O capacity across multiple racks
  • Distributed control cabinets with local power
  • Large automation systems with separated I/O sections
  • Central coupling in multi-processor configurations

Installation Guide

• Turn off all power to all S7-400 racks
• Insert the IM 460-0 into the central rack (CPU rack)
• Insert the matching IM 461-0 into the remote rack
• Connect the two modules using the interface cable (max 5m)
• Install the termination plug on the last interface module in the chain
• Do not connect more than one send module per CPU
• Power on all racks and verify C-bus communication

Maintenance & Debugging

• Check LED status on both IM 460 and IM 461 modules
• If communication fails, verify cable connections and termination plug
• Ensure the remote rack has its own power supply
• Check that the cable length does not exceed 5 meters
• Verify the CPU configuration includes multi-rack settings

Package Contents

• 1x 6ES7460-0AA01-0AB0 IM 460-0 send interface module
• Termination plug not included (order separately: 6ES7461-0AA0-7AA0)
• Interface cable not included (order separately)
• Product documentation

Warranty & Shipping

• 12-month warranty against manufacturing defects
• Ships within 12-24 hours on business days
• Express delivery via FedEx, UPS, or DHL

Frequently Asked Questions (FAQ)

• Q: What is the difference between IM 460-0 and IM 460-1?
  • A: IM 460-0 does not transfer power to the remote rack. IM 460-1 transfers power. Use IM 460-0 when remote racks have their own power supplies.
• Q: Can I connect multiple remote racks with one IM 460-0?
  • A: Yes, you can connect up to 16 remote racks. Each remote rack needs its own IM 461-0. The total cable length between first and last module must stay under 5 meters.
• Q: Why do I need a termination plug?
  • A: The termination plug ensures proper signal reflection on the C-bus. Always install it on the last interface module in the chain.
• Q: Does this module work with S7-400 CPUs with C-bus?
  • A: Yes, the module works with all S7-400 CPUs that support multi-rack configurations. C-bus communication is standard on all S7-400 backplanes.
• Q: What happens if I exceed the 5-meter cable limit?
  • A: Communication may become unreliable or fail completely. Use a repeater or place your racks closer together. The 5-meter limit applies to the total cable length of the entire chain.

Buying Guide & Selection Advice

• Choose 6ES7460-0AA01-0AB0 for central coupling without power transfer.
• Need power transfer to remote racks? Select 6ES7460-1BA00-0AA0 (IM 460-1).
• Always order the required termination plug (6ES7461-0AA0-7AA0) separately.
• Ensure you have the matching IM 461-0 on each remote rack.
• Check your CPU’s multi-rack capability before ordering.

Comparison with Similar Models

• 6ES7460-0AA01-0AB0 vs. 6ES7460-1BA00-0AA0
  • Both are IM 460 send modules for S7-400
  • 6ES7460-0AA01-0AB0: No power transfer (C-bus only)
  • 6ES7460-1BA00-0AA0: Power transfer to remote racks
  • IM 460-0 has lower power consumption (140mA vs. higher)
  • IM 460-0 requires power supplies on remote racks
  • IM 460-1 is more expensive but simplifies remote rack power
  • Choose IM 460-0 for distributed cabinet designs with local power

Contact & Support

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825 (click to chat)

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