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- PM556-TP-ETH 1SAP121200R0071
- Program Logic Controller
- Sweden (SE)
- 74 × 135 × 82 mm
- 0.35 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB PM556-TP-ETH (1SAP121200R0071) is a high-performance CPU Programmable Logic Controller (PLC) from the ABB AC500-eCo / AC500 automation platform. It is designed for advanced machine control and distributed automation systems, offering increased processing capability, expanded memory, and integrated communication interfaces.
It supports Ethernet-based networking and serial communication, making it suitable for connected industrial environments and medium-complexity control applications.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB |
| Model | PM556-TP-ETH |
| Part Number | 1SAP121200R0071 |
| Product Type | CPU Programmable Logic Controller |
| System Compatibility | ABB AC500 / AC500-eCo platform |
| Function | Central processing unit for PLC control systems |
| Program Memory | 512 kB |
| Digital Inputs | 8 × 24 V DC |
| Digital Outputs | 6 × transistor outputs |
| Communication Interfaces | Ethernet, RS485 |
| Protocol Support | Modbus TCP, Modbus RTU |
| Expansion Capability | Supports AC500 expansion modules |
| Power Supply | 24 V DC |
| Programming Standard | IEC 61131-3 |
| Programming Languages | LD, FBD, ST, SFC, IL |
| Diagnostics | LED indicators (Power, Run, Error, I/O status) |
| Installation Type | DIN rail mounting |
| Dimensions | 74 × 135 × 82 mm |
| Weight | 0.35 kg |
Function and Working Principle
The PM556-TP-ETH operates as a real-time industrial PLC CPU with enhanced performance.
Its core functions include:
- Executing user PLC programs with improved memory capacity
- Processing digital input/output signals from field devices
- Managing machine sequencing and automation logic
- Handling Ethernet communication for SCADA and HMI systems
- Supporting RS485 communication for field-level devices
- Coordinating expansion I/O modules
- Performing continuous diagnostics and system monitoring
Scan Cycle Operation
The controller operates in a deterministic cycle:
Input Scan → Logic Execution → Output Update → Communication Handling
This ensures stable and predictable control behavior even in complex automation systems.
Role in Industrial Control Systems
Within ABB AC500 systems, the PM556-TP-ETH functions as:
- A mid-to-high performance PLC CPU
- A central controller for machine and process automation
- A network-enabled industrial communication node
- A system coordinator for distributed I/O modules
- A diagnostic and fault monitoring unit
Industrial Applications
The PM556-TP-ETH is widely used in:
- Factory automation systems
- Packaging machinery
- Conveyor and material handling systems
- HVAC control systems
- Water and wastewater treatment plants
- Food and beverage production lines
- Industrial OEM machinery
- Process automation systems
Installation and System Integration
- Mount on DIN rail inside control cabinet
- Connect 24 V DC power supply
- Wire sensors to digital inputs and actuators to outputs
- Configure logic using ABB AC500 engineering software
- Connect Ethernet for SCADA/HMI communication
- Use RS485 for Modbus RTU field devices
- Expand system using AC500 I/O modules if required
Compatible System Components
- ABB AC500 digital I/O modules
- ABB AC500 analog I/O modules
- ABB AC500 communication modules
- HMI operator panels
- SCADA systems
- Modbus TCP / Modbus RTU devices
- Industrial sensors and actuators
Recommended Alternative Models
| Model | Product Type | Key Feature | Application |
|---|---|---|---|
| PM556-TP-ETH | CPU PLC | High-performance Ethernet PLC | Networked automation systems |
| PM565-ETH | CPU PLC | Higher memory and performance | Complex process control |
| PM564-TP-ETH | CPU PLC | Mid-range PLC CPU | Standard industrial automation |
| PM573-ETH | CPU PLC | Advanced communication capabilities | Industrial networking systems |
Key Advantages
- Higher memory capacity (512 kB) for complex programs
- Integrated Ethernet communication for industrial networking
- Reliable real-time deterministic execution
- Supports IEC 61131-3 programming standard
- Dual communication (Ethernet + RS485)
- Modular expansion capability
- Compact DIN rail design
- Suitable for continuous industrial operation
Technical FAQs
Q1: What is the main function of PM556-TP-ETH?
It executes PLC control programs and manages communication and I/O in industrial automation systems.
Q2: What communication interfaces does it support?
It supports Ethernet and RS485 communication.
Q3: What is its memory capacity?
It provides 512 kB program memory for control applications.
Q4: Does it support expansion modules?
Yes, it supports ABB AC500 I/O expansion modules.
Conclusion
The ABB PM556-TP-ETH (1SAP121200R0071) is a high-performance PLC CPU designed for the AC500 automation platform. With increased memory, Ethernet connectivity, and reliable real-time control capability, it is well suited for industrial machine automation, process control, and networked manufacturing systems.