TSXP573634M | Schneider Electric Modicon Premium Unity Processor

What Happens When a Legacy Modicon Premium CPU Fails?

Plant engineers often face a critical question: how do you maintain a control system when its processor is discontinued? The Schneider Electric TSXP573634M is a Unity processor for the Modicon Premium platform. It delivers deterministic control with a PowerPC-based architecture and integrated math coprocessor. However, this model is discontinued. Therefore, understanding its exact specifications is essential for replacement planning or spare-part verification.

TSXP573634M Technical Specifications

The TSXP573634M operates from a 5 V DC backplane supply and draws 1650 mA of bus current. Its power consumption is 5.6 W. The processor runs at 66 MHz and includes an integrated PowerPC FPU for floating-point math. Program memory is 2048 KB (2 MB), while data memory and internal RAM each provide 192 KB. Scan speed ranges from 0.12 to 0.17 µs per boolean instruction, depending on whether a PCMCIA card is installed. The module measures 140 × 35 × 80 mm and weighs 0.5 kg. Its IP20 rating suits cabinet-mounted installations.

Key Parameters

• Processor: Unity (PowerPC-based) at 66 MHz
• Program memory: 2048 KB (2 MB)
• Data memory: 192 KB
• Bus current: 1650 mA @ 5 V DC
• Power consumption: 5.6 W
• Built-in ports: 1× Ethernet 10/100 (RJ45), 2× RS-485 serial
• Max discrete I/O: 1024 points
• Max analog I/O: 128 points
• Dimensions (H×W×D): 140 × 35 × 80 mm
• Weight: 0.5 kg

I/O Capacity and Rack Configuration

The TSXP573634M supports up to 1024 discrete I/O points and 128 analog I/O points. It fits 4-, 6-, 8-, and 12-slot backplanes. Local rack capacity reaches 16 racks for 4/6/8-slot configurations or 8 racks for 12-slot configurations. Expansion racks are not available. Consequently, all I/O must reside on local racks. This constraint demands careful planning when replacing a failed unit.

Communication and Integration

Built-in communication includes one Ethernet 10/100 RJ45 port and two RS-485 serial ports. These support Modbus TCP/IP and Modbus RTU protocols. For additional fieldbus connectivity, the Premium backplane accepts communication modules such as Fipio, Fipway, Modbus Plus, Ethernet, and PROFIBUS DP. When integrating into a PROFIBUS DP network, verify that the correct communication module is present. Wiring into such networks may require an external gateway or connection module. Confirm cables and gateways with your supplier.

Discontinued Status and Replacement Path

Schneider Electric has discontinued the TSXP573634M. The last verification date is 2026-09. For new installations, the recommended replacement is the Modicon M580 (BMEP58xxx) platform. Nevertheless, many existing Premium systems still require exact-match spares. Therefore, verify current lifecycle status and availability with AutoDCSTech before ordering. Our team provides engineering-grade precision in matching legacy components to your exact requirements.