Network Topology & I/O Configuration
Visualize PLC Network
Topology & I/O Modules
Map your complete I/O configuration, network connections, and device topology from your ACD file without needing Studio 5000.
- Allen-Bradley PLC network topology is defined in the I/O configuration tree in Studio 5000 — racks, modules, and EtherNet/IP connections.
- plc.company extracts and visualizes the complete I/O and network architecture from your ACD or L5X file without Studio 5000.
- View rack layouts, module types, catalog numbers, firmware versions, and network connections instantly.
- No Studio 5000 required — upload your ACD or L5X file to visualize your full network topology.
What is Network Topology?
In an Allen-Bradley PLC system, network topology describes how the controller, I/O modules, communication networks, and remote devices are physically and logically connected:
- Local chassis configuration with controller and module slots
- Remote I/O racks connected via EtherNet/IP, ControlNet, or DeviceNet
- Digital, analog, communication, motion, and specialty I/O modules
- Produced and consumed tag connections between controllers
- Network addresses and IP configuration for each network segment
- Module firmware versions and I/O point assignments
Network & I/O Module
Visualization
Rack View
See a visual representation of each chassis with modules in their physical slot positions. Quickly identify empty slots, module types, and catalog numbers at a glance.
Tree View
Navigate the I/O configuration hierarchy as a tree: controller, local chassis, remote racks, and individual modules. Expand and collapse sections to focus on specific areas.
Communications View
Visualize network connections between controllers and devices. See EtherNet/IP connections, IP addresses, produced/consumed tag mappings, and communication paths.
Digital I/O Modules
Identify digital input (1756-IB16, 1756-IB32) and output modules (1756-OB16, 1756-OB32) with point counts and wiring configurations.
Analog I/O Modules
View analog input (1756-IF8, 1756-IF16) and output modules (1756-OF8) with channel ranges, signal types, and scaling parameters.
Communication Modules
Detect EtherNet/IP (1756-EN2T, 1756-EN3TR), ControlNet (1756-CNB), and DeviceNet (1756-DNB) modules with network addresses.
Motion Modules
Identify servo drive modules (1756-M08SE, Kinetix connections) with axis configurations, feedback types, and motion group assignments.
Safety Modules
Detect GuardLogix safety I/O modules (1756-IB16S, 1756-OB16S) and safety network connections with SIL rating information.
How to View Network Topology
Export your PLC file
Export your Allen-Bradley PLC program as an ACD or L5X file from Studio 5000 Logix Designer.
Upload to plc.company
Go to plc.company and upload your ACD or L5X file. Network topology visualization is included.
View I/O rack layout
Browse rack layouts, I/O modules, and network connections for all controllers in the project.
Map produced and consumed tags
View produced and consumed tag mappings to trace data flow between controllers on the EtherNet/IP network.
Frequently Asked Questions
What is PLC network topology?
PLC network topology refers to the physical and logical arrangement of controllers, I/O modules, communication networks, and connected devices in an automation system. For Allen-Bradley systems, this includes the controller chassis with its backplane, remote I/O racks connected via EtherNet/IP or ControlNet, and produced/consumed tag connections between controllers. Understanding the topology is essential for troubleshooting communication issues and planning system modifications.
How does the topology viewer extract network information?
The topology viewer parses your ACD or L5X file to extract the complete I/O configuration tree. This includes the local controller chassis, all modules in each slot (with catalog numbers and firmware versions), remote I/O racks and their modules, EtherNet/IP connections with IP addresses, produced and consumed tag relationships, and communication paths. The information is presented in an interactive visual layout.
What I/O module information can I see?
For each I/O module in your configuration, the viewer displays: catalog number (e.g., 1756-IB16), slot position, module description, firmware version, connection type (rack-optimized, direct), module-defined tags, and channel configuration. You can see which modules are digital input, digital output, analog input, analog output, communication, motion, or specialty modules.
Can I view topology without Studio 5000?
Yes. PLC Company extracts and displays the complete I/O configuration and network topology from your ACD or L5X file without requiring Studio 5000. This is particularly useful for maintenance teams who need to verify module configurations, check IP addresses, or understand the I/O architecture of a system without having a Rockwell license available.
Map Your PLC Network Topology
Upload your Allen-Bradley file to visualize I/O modules, rack layout, and device connections
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