Schneider Electric TSXPACC01 UNI-TELWAY Bus Tap-off Box

Description

The Schneider Electric TSXPACC01 is a terminal isolation box, also known as a tap-off box, specifically designed for the UNI-TELWAY industrial communication bus. This component is essential for creating junctions and connecting devices within a legacy Modicon PLC network. Its robust metal construction ensures durability and reliable performance in demanding industrial environments.

Specifications

• Manufacturer: Schneider Electric
• Part Number: TSXPACC01
• Product Type: Terminal Isolation Box / Tap-off Box
• Communication Protocol: UNI-TELWAY
• Enclosure Material: Metal
• Connectors: Labeled TER (Termination) and AUX (Auxiliary)

Label Info

• Model: TSXPACC01
• Serial Number: 21031311699
• Product Version (PV): 04
• Release Level (RL): 07
• Date of Manufacture (DOM): March 2003

Application

This tap-off box is used in automation systems running on the UNI-TELWAY protocol, primarily with older Schneider Electric PLCs such as the Modicon Premium and Modicon Quantum series. It allows for the creation of drop-lines to connect devices like HMIs, drives, or other PLCs to the main bus line.

Country of Origin

Made in France.

CO2 Impact

Reusing this component helps avoid the CO2 emissions associated with manufacturing a new one, contributing to a more sustainable industrial operation. By choosing this used part, you save approximately 18 kg of CO2.

Availability

This is an obsolete item but is available from our stock as a spare part for maintaining existing systems. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?
What is the UNI-TELWAY protocol and which PLCs use it?

Answer

UNI-TELWAY is a proprietary fieldbus protocol developed by Telemecanique (now Schneider Electric). It was widely used for communication between PLCs, HMIs, and other devices in the Modicon TSX series, particularly the Modicon Premium and Quantum platforms, before being superseded by modern protocols like Ethernet/IP.

Question?
What is the purpose of the 'TER' and 'AUX' connectors on this box?

Answer

The 'TER' connector is for the main bus line termination or through-connection, ensuring signal integrity across the network. The 'AUX' (Auxiliary) connector typically provides a drop-line or tap-off point to connect a specific device to the bus.

Question?
Is this TSXPACC01 box compatible with modern Ethernet/IP or Modbus TCP networks?

Answer

No, the TSXPACC01 is designed exclusively for the physical and electrical standards of the UNI-TELWAY bus. It is not compatible with Ethernet-based protocols like Modbus TCP or Ethernet/IP. A protocol converter or gateway would be required to integrate a UNI-TELWAY device into a modern network.

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Last Update: Friday, March 13, 2026