The CompactLogix PLC is a flagship compact industrial automation
controller from Rockwell Automation, seamlessly blending
space-saving design with robust performance for small-to-mid-sized
control systems. Featuring a rackless modular architecture, it fits
easily into space-constrained cabinets while delivering powerful
32-bit multi-task processing and supporting up to 30 local I/O
modules.
Core Advantages
Flexible & Compact Modular Design
- Rackless modular architecture compatible with 1769 Compact I/O,
5069 Series I/O, and other modules for plug-and-play configuration
- Supports up to 30 local I/O modules and distributed I/O expansion
via extension cables
- Seamlessly compatible with Allen-Bradley's ControlLogix and
MicroLogix product lines
Powerful Multi-Scenario Control Capabilities
- 32-bit multi-task real-time processor with mixed program execution
speed of 0.08ms/K
- 5380 Series supports up to 32 axes of motion control for
high-precision applications
- Enables scheduling of continuous, periodic, and event-driven tasks
Secure & Stable Communication & Protection
- Native support for EtherNet/IP protocol with CIP Safety functions
on high-end models
- Compatible with DeviceNet, ControlNet, and Modbus TCP protocols
- Operates reliably in 0-60°C environments with vibration resistance
and EMI shielding
- Device Level Ring (DLR) network topology support enhances network
resiliency
User-Friendly Programming & Maintenance
- Compliant with IEC 61131-3 programming standards with Studio 5000
Logix Designer software
- Built-in energy storage eliminates the need for lithium batteries
- Comprehensive diagnostic features enable quick troubleshooting of
module faults
Main Product Series
1769 Series (Legacy Classic Line)
Entry-level controllers for basic small-scale applications,
supporting distributed networking via fieldbuses.
5370 Series (Launched in 2012)
Key models with dual Ethernet ports, integrated safety up to SIL
3/PLe Cat 4, and universal analog I/O support.
5380 Series (Launched in 2016, High-End Flagship)
High-performance models with faster processing speeds, expanded
memory, and enhanced cybersecurity features.
Armor CompactLogix Series
IP67-rated washdown protection for on-machine installation,
integrating standard control, safety, and motion control.
Core Certifications
UL, CSA, CE, ATEX, IEC 61131-2, IEC 62443 (Cybersecurity), IECEx,
TÜV (SIL 2/3), C-Tick, KC, RCM
Technical Specifications
Processor & Memory
| Series/Model | Processor Specification | User Memory | Program Execution Speed |
|---|
| 5370 L1/L2 | 32-bit PowerPC core, 80MHz (105 MIPS) | 384KB ~ 1MB | 0.08ms/K mixed instructions |
| 5370 L3 | 32-bit PowerPC core, up to 1.5GHz | 2MB ~ 3MB | 0.06ms/K mixed instructions |
| 5380 Series | 32-bit multi-core processor | 3MB ~ 20MB | 0.05ms/K mixed instructions |
| 5480 Series | Intel i7 2.4GHz quad-core processor | 3MB ~ 20MB + 6GB SDRAM | 0.04ms/K mixed instructions |
I/O Expansion Capability
- Local I/O Support: Up to 31 local I/O modules compatible with digital, analog, and
specialty modules
- Distributed Expansion: Works with Point I/O and Flex I/O for remote I/O networking
- I/O Node Capacity: Entry-level: 8 EtherNet/IP nodes; High-end models: 250+ nodes
- High-Speed I/O Response: Millisecond-level digital input response; Analog module sampling
rate up to 1kHz
Motion Control Performance
| Series/Model | Maximum Motion Axes | Motion Control Protocol | Core Functions |
|---|
| 5370 L2 | 4 axes | CIP Motion (EtherNet/IP) | Point-to-point control, electronic gearing/camming |
| 5370 L3 | 16 axes | CIP Motion, Sercos III | Multi-axis synchronization, path planning |
| 5380 Series | 32 axes | CIP Motion | High-precision position loop control (±0.1μm) |
| 5480 Series | 150 axes | CIP Motion | Complex kinematics calculation, robot coordination |
Communication Interfaces
- Ethernet Ports: Multiple configurable EtherNet/IP ports with DLR topology support
- Other Interfaces: USB 2.0/3.0 for programming & data transfer, RS-232/RS-485
optional
- Supported Protocols: EtherNet/IP, CIP Safety, Modbus TCP, OPC UA, DeviceNet
Power & Environmental Specifications
- Power Input: 18~32VDC (DC models); 85~265VAC (AC models via power module)
- Operating Temperature: 0~60℃ (standard); -20~70℃ (XT extreme environment models)
- Relative Humidity: 5%~95% (non-condensing)
- Protection Rating: IP20 (controller body); IP67 (Armor Series)
- Vibration Resistance: 2g @ 10~500Hz (operating); 30g (shock protection)
Product Model List
| Series | Model | Key Specifications | Core Applications |
|---|
| CompactLogix 5370 | 1769-L16ER-BB1B | 384KB user memory; 16 DI, 16 DO; 2 Ethernet/IP ports; up to 4
Ethernet/IP nodes; 1GB SD card | Small-scale standalone automation |
| CompactLogix 5370 | 1769-L18ER-BB1B | 512KB user memory; 16 DI, 16 DO; 2 Ethernet/IP ports (DLR); up to 8
modules expansion | Medium-sized equipment control with basic I/O requirements |
| CompactLogix 5370 | 1769-L18ERM-BB1B | 512KB user memory; 16 DI, 16 DO; 2 integrated motion axes; 2
Ethernet/IP ports | Small-scale motion control scenarios |
| CompactLogix 5370 | 1769-L19ER-BB1B | 1MB user memory; 16 DI, 16 DO; 2 Ethernet/IP ports; up to 8 modules
expansion | Small-to-medium automation systems requiring larger memory |
| CompactLogix 5380 | 5069-L306ER | 600KB user memory; 8 I/Os; 16 Ethernet/IP devices; Ethernet/IP
communication | Small-sized smart equipment control |
| CompactLogix 5380 | 5069-L306ERMS2 | 0.6MB standard memory + 0.3MB safety memory; SIL2/PLe; 8 I/Os; 2
motion axes | Safety-related small motion systems |
| CompactLogix 5480 | 5069-L430ERMW | 3MB Logix memory; 60 nodes; up to 31 I/O modules; 16 motion axes;
Windows 10 IoT Enterprise | Medium-sized intelligent control with data analysis |
Frequently Asked Questions
Q1: The PLC fails to power on after installation at the overseas
site, and no indicator lights are on. What's the issue?
First, check the voltage! Most CompactLogix models use 18-32VDC,
but some overseas factories mistakenly connect 110VAC directly.
Check power cables and ensure the power module is fully seated.
Overloading is a frequent culprit in small-scale plants with messy
wiring.
Q2: The analog signal (temperature/pressure) fluctuates wildly, and
the data is completely unreliable. How to fix it?
This is almost always interference. Separate analog cables from
power cables, use shielded cables and ground the shield only on the
PLC side. For high humidity environments, use conformal-coated
analog modules.
Q3: The EtherNet/IP communication keeps dropping out, and the HMI
can't connect to the PLC stably. What should I do?
Check for IP conflicts in multi-device factories. For 5380 series,
don't connect both ports to the same network. In harsh
environments, use industrial-grade network cables and disable
unused protocols.
Q4: After replacing a faulty I/O module, the PLC reports "Slot
Configuration Mismatch" and won't run. Why?
The model selected in software doesn't match the physical module.
Check DIP switch settings for Flex I/O racks and set electronic
keying mode to "Compatible Keying" if firmware versions differ.
Q5: The PLC crashes frequently in high-temperature environments.
How to prevent this?
Install the PLC in the mid-section of the cabinet with ventilation
space. Upgrade to XT series for extreme temperatures. Clean dust
filters regularly and avoid mounting near heat sources.
