Introduction
The Schneider TSXH5744M Unity Hot Standby Processor is a high‑availability central processing unit engineered for the Modicon Premium automation platform. It’s tailored for mission‑critical industrial automation systems where uninterrupted operation and automatic failover are essential. Featuring redundancy‑aware architecture, this processor supports hot standby operation — meaning a secondary processor can automatically take over if the primary fails, minimizing system downtime and enhancing plant reliability.
Compatible with Unity Pro programming software, the TSXH5744M offers strong performance characteristics, ample I/O capacity, and versatile connectivity options, making it suitable for complex process control, distributed automation, and industrial control applications where both robust logic execution and resilient operation are required.
Technical Specifications
| Specification | Details |
|---|
| Model | TSXH5744M |
| Manufacturer | Schneider Electric |
| Module Type | Unity Hot Standby Processor |
| Automation Platform | Modicon Premium |
| Software Support | Unity Pro |
| Rack Compatibility | 1 rack (6 / 8 / 12 slots) |
| Discrete I/O Processor Capacity | Up to 2048 I/O |
| Analog I/O Processor Capacity | Up to 256 I/O |
| Application Channels | 64 |
| Process Control Loops | 20 to 60 simple loops |
| Execution Time | Boolean: 0.039–0.057 µs; Fixed/Word: 0.054–0.073 µs; Floating: 0.055–0.063 µs |
| Internal RAM (with PCMCIA) | 2048 kB program; 440 kB data |
| Internal RAM (without PCMCIA) | 440 kB (program + data) |
| PCMCIA Storage | 16384 kB |
| Communication Interfaces | Ethernet (10/100 Mbps), USB Type A, Serial RS485 |
| Supported Comm Modules | Up to 4 |
| Indicators | LEDs for RUN, ERR, COL, I/O, TX, RX, STS, TER |
| Power Consumption | 1880 mA @ 5 V DC |
| Module Format | Double |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | ‑25°C to 70°C |
| Relative Humidity | 10–95% non‑condensing |
| Protection Class | IP20 |
| Weight | Approx. 0.61 kg |
| Application Area | High‑availability control systems |
Applications
High‑Availability Production Systems
Ideal for manufacturing facilities requiring continuous operation and automatic redundancy to reduce downtime.
Complex Process Control Automation
Handles large I/O counts and intricate control loops for chemical, power, and processing industries.
Distributed Control Architectures
Integrates with distributed I/O and networked devices using Ethernet, RS485, and USB connections.
Critical Infrastructure Control
Used in utility automation and infrastructure systems where reliability and failover capability are imperative.
Panel and Rack‑Mounted Control Systems
Fits within standard Modicon Premium racks (6/8/12 slots), offering flexible system expansion.
Advantages
Hot Standby Redundancy
Processor architecture supports automatic switch‑over to a redundant unit, ensuring continuous execution during faults.
High I/O Capacity
Supports extensive discrete and analog I/O, enabling large‑scale control solutions without excessive hardware segmentation.
Fast Execution Performance
Low instruction execution times enhance system responsiveness and throughput for logic and control tasks.
Versatile Communications
Built‑in Ethernet, USB, and RS485 interfaces facilitate integration with SCADA, HMI, and other networked systems.
Unity Pro Compatibility
Programmed and managed using Unity Pro, providing familiar tooling for developers and engineers.
Technical FAQs
1. What does “hot standby” mean?
A hot standby processor is a redundant CPU that can immediately take over execution if the primary processor fails, minimizing downtime.
2. Which PLC platform is TSXH5744M designed for?
It is designed for the Schneider Modicon Premium automation platform.
3. What software is required for programming?
Unity Pro is the supported development and configuration software.
4. How many I/O points can this processor handle?
It supports up to 2048 discrete I/O and 256 analog I/O points.
5. What communication interfaces are available?
The processor offers Ethernet (10/100 Mbps RJ45), USB Type A, and a serial RS485 port.
6. How many communication modules can be connected?
Up to four communication modules can be supported for expanded connectivity.
7. What is the purpose of PCMCIA storage?
PCMCIA provides additional non‑volatile storage for programs and data.
8. Is the module suitable for extreme environments?
Operates in typical industrial conditions (0°C to 60°C, up to 95% non‑condensing humidity).
9. What physical format does the processor use?
It uses a double module format designed for larger backplane racks.
10. Is it suitable for safety‑critical applications?
Yes — its redundancy capabilities make it suitable for systems where uninterrupted operation is essential.
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