Micro800 PLC: Compact Control Solutions for OEM & Standalone Machines
The Micro800 PLC is a compact, cost-effective micro-PLC series from Rockwell Automation, specifically engineered to deliver tailored control solutions for OEM manufacturers and standalone machine applications. Featuring a space-saving modular design, it allows seamless expansion of I/O, communication, and specialty functions via plug-in modules without increasing the controller footprint, while also supporting expansion I/O modules for flexible customization based on specific application needs.
Key Features and Benefits
Compact Design & Flexible Expansion
The Micro800 series features a compact architecture with plug-in modules that embed directly into the controller body, expanding I/O and communication functions without increasing equipment footprint. This makes it ideal for space-constrained standalone devices. Models range from the entry-level Micro810 to high-performance Micro870, with some variants measuring only 8.7 cm × 9 cm × 4.45 cm for easy integration into small-scale equipment.
High Adaptability for OEM Requirements
Catering to batch equipment development needs, the series supports programming and simulation across all models via the unified Connected Components Workbench software. It enables code reuse and user-defined function block development, significantly shortening equipment development cycles and reducing error rates for diverse standalone control scenarios.
Stable Communication & Easy Maintenance
With robust communication capabilities including EtherNet/IP, Modbus, and serial protocols, the Micro800 enables seamless integration with HMIs, drives, and third-party devices. Features like removable terminal blocks, hot-swappable modules, and SD card slots enhance maintenance efficiency and reduce lifecycle costs.
Versatile Application Coverage
Beyond manufacturing automation, the Micro800 series is widely used in building HVAC systems, logistics equipment, and various industrial applications requiring precise control and reliable operation in diverse environments.
Core Technical Specifications
| Parameter Category |
Specific Parameter |
Details |
| Core Performance |
Memory Capacity |
Up to 280KB total memory across the series, supporting maximum 20,000 program steps |
| |
Scan Speed |
Micro820: ~3ms scan time in practical applications |
| |
Motion Control |
Micro830: basic motion control; Micro850: 3-axis motion control; selected models compatible with 250kHz high-speed counter modules |
| Digital I/O |
Embedded I/O Points |
Micro810: max 12 points; Micro820: 20 points; Micro870: max 48 embedded points; expandable to 304 digital I/O points total |
| |
Expansion Capability |
Supports digital I/O plug-in modules; up to 20-channel relay output expansion |
| Analog I/O |
Expansion Capability |
Supports 2-channel & 4-channel non-isolated analog I/O plug-in modules; up to 20-channel analog input expansion |
| |
Special Adaptation |
Selected modules support RTD/thermocouple inputs; paired with PID instructions for precise temperature control |
| Communication |
Supported Protocols |
EtherNet/IP, Modbus RTU, ASCII, DF1, DNP3; up to 5 serial ports expandable |
| |
Additional Features |
Supports client message symbolic addressing; compatible with PanelView 800 graphic terminals |
| Power & Environment |
Power Supply |
Selected modules support 24V DC power supply; compatible with series expansion needs |
| |
Operating Temperature |
-20°C to 65°C (uniform across full series) |
| |
Protection Rating |
IP20 enclosure; DIN rail & panel mounting supported |
Product Model Overview
| Model Series |
Core Part Numbers |
Key Configuration |
Target Applications |
| Micro810 |
2080-LC10-12QWB
2080-LC10-12AW |
12 integrated I/O points; 4 high-current relay outputs; USB programming port; optional LCD display |
Small equipment with simple logic control; relay replacement applications |
| Micro820 |
2080-LC20-20QWB
2080-LC20-20QBB |
20 integrated I/O points; supports 2 plug-in modules; Ethernet/IP, USB and serial ports |
Remote automation projects and small standalone machines |
| Micro830 |
2080-LC30-10QWB
2080-LC30-48QBB |
10/16/24/48-point I/O configurations; supports 5 plug-in modules; basic motion control |
Medium-complexity standalone machines with basic motion control needs |
| Micro850 |
2080-L50E-48QBB
2080-LC50-24AWB |
Supports 132 I/O points; 4 expansion modules; advanced motion control functions |
Large standalone equipment requiring multi-signal processing |
| Micro870 |
2080-LC70-48QWB
2080-LC70-304QB |
Supports 304 I/O points; 8 expansion modules; 2-axis motion control; 280KB memory |
Large-scale high-end standalone machines with high I/O density |
Industry Applications
Food & Beverage Packaging
- Bottle positioning and filling volume control for beverage lines
- Sealing temperature adjustment and cutter synchronization for packaging machines
- Precise servo film feeding control with pulse output functionality
Pharmaceutical & Medical Devices
- Conveyor control for pharmaceutical sorting lines compliant with GMP standards
- Closed-loop temperature control for reagent mixing and vaccine storage
- Production batch reporting meeting international audit requirements
Automotive Components Manufacturing
- Drilling machine positioning control and mold temperature monitoring
- Terminal crimping sequence logic for wire harness assembly lines
- Multi-axis synchronization for high-precision component processing
Logistics & Material Handling
- Start-stop and diverting control for sorters in e-commerce warehouses
- Speed regulation of pallet conveyor lines in port operations
- Parcel counting and barcode scanning linkage for sorting centers
Building HVAC & Infrastructure
- Temperature and humidity adjustment for commercial air conditioning
- Energy-saving control for ventilation systems in various facilities
- Closed-loop temperature control for data center server rooms
Water Treatment & Environmental Protection
- Pump start-stop and liquid level control in sewage treatment plants
- Solenoid valve timing control in agricultural irrigation systems
- Wastewater pH monitoring and chemical dosing control
Frequently Asked Questions
Q: After wiring in a European factory, analog readings keep fluctuating wildly. What's the problem?
A: This is typically caused by electromagnetic interference (EMI) or improper wiring. Use twisted shielded cables with the shield grounded only at the PLC end, and separate signal wires from power cables by at least 20cm to stabilize readings.
Q: When integrating with Siemens S7-200 PLCs, data transfer fails constantly. How to fix it?
A: This is a protocol incompatibility issue. Add an industrial IoT gateway for protocol conversion between Modbus TCP (Micro800) and Modbus RTU (S7-200), ensuring communication parameters match between the gateway and both PLCs.
Q: In high-temperature workshops, the PLC shuts down automatically frequently. Where to check?
A: Check heat dissipation and power supply. Ensure adequate ventilation around modules and consider installing exhaust fans. Use voltage stabilizers to protect against power grid fluctuations in high-temperature environments.
Q: After connecting third-party warehouse scanning equipment, some I/O points don't respond. How to troubleshoot?
A: Verify wiring type matches module configuration. Test scanner output with a multimeter and rewire according to signal type. Check I/O addresses in programming software and ensure signals are connected to properly configured channels.
Q: The PLC can't recognize installed expansion I/O modules. What to do?
A: This is likely due to poor module contact or firmware incompatibility. Power off, clean module and backplane interfaces, and reinsert firmly. Check firmware versions and upgrade all modules to the same version if necessary.
Q: In HVAC systems, the PLC loses its program after power outages. What's the cause?
A: The backup battery has likely failed. Replace with an industrial-grade battery and set up automatic backups in the programming software to regularly upload programs to a local computer for quick restoration.
