Overview
The Siemens 545-1101 PLC Module is a central processing unit designed for the SIMATIC TI545 programmable logic controller. Released in the late 1990s, this module became a trusted solution for mid-range automation systems across manufacturing, energy, and infrastructure sectors. It delivers real-time control, flexible I/O support, and robust communication capabilities, making it suitable for both discrete and process automation.
Powered by a Motorola 68000 processor running at 8 MHz, the 545-1101 handles complex logic operations with speed and reliability. It includes 28 KB of RAM and 64 KB of ROM, allowing engineers to store user programs, data blocks, and diagnostic routines. Moreover, it supports Siemens STEP 5 software, enabling efficient programming and system integration.
Although discontinued, the 545-1101 remains widely available through industrial resellers and is still used in legacy systems requiring long-term support and minimal downtime.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 545-1101 |
| Dimensions | 80 × 20 × 60 mm |
| Weight | 1 kg |
Typical Applications / System Integration
The Siemens 545-1101 CPU module is widely used in industrial control systems that require reliable logic execution and flexible I/O handling:
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Manufacturing Plants: Controls conveyors, robotic arms, and inspection systems.
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Energy Infrastructure: Manages substation automation and turbine control.
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Water Treatment Facilities: Coordinates pumps, valves, and sensor feedback loops.
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Transportation Systems: Supports traffic control, tunnel ventilation, and rail signaling.
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Process Industries: Executes batch control, safety interlocks, and real-time monitoring.
Its compatibility with TI545 I/O modules and STEP 5 software makes it ideal for facilities maintaining legacy Siemens automation platforms.
FAQ
Q: What PLC system is the 545-1101 compatible with?
A: It is designed for the SIMATIC TI545 PLC platform.
Q: What processor does it use?
A: A Motorola 68000 CPU running at 8 MHz.
Q: How much memory is available?
A: 28 KB RAM and 64 KB ROM.
Q: What communication protocols are supported?
A: Modbus RTU and Profibus DP.
Q: Is it still in production?
A: No, but it is available through industrial resellers for legacy system support.
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