Protocol Comparison
Modbus TCP/IPvsEtherNet/IP
Comprehensive comparison of two leading industrial communication protocols to help you choose the right solution for your automation project.
Modbus TCP/IP
Ethernet-based variant of Modbus using TCP/IP. Combines simplicity of Modbus with speed and scalability of Ethernet.
Type:Industrial Ethernet
Speed:1 Gbps capable
Released:1999
Adoption:Very High
EtherNet/IP
Industrial Protocol using standard Ethernet and TCP/IP. Primary protocol for Rockwell Automation (Allen-Bradley) systems.
Type:Industrial Ethernet
Speed:1 Gbps
Released:2001
Adoption:Very High
Head-to-Head Comparison
| Category | Modbus TCP/IP | EtherNet/IP |
|---|---|---|
| Speed | ●1 Gbps capable | ●1 Gbps |
| Cost | ✓Low | Medium-High |
| Complexity | Low | ✓High |
| Real-Time | No | ✓Yes |
| Scalability | ●Excellent | ●Excellent |
| Industry Support | ●Very High | ●Very High |
| Max Nodes | Unlimited (network dependent) | Unlimited (network dependent) |
✓Better
●Tie
When to Choose Modbus TCP/IP
Best For:
- •SCADA systems
- •Plant-wide data collection
- •Building management systems
- •Remote monitoring
- •Enterprise system integration
Key Advantages:
- ✓High speed (up to 1 Gbps)
- ✓Uses standard Ethernet infrastructure
- ✓Unlimited nodes and distance (with switches)
- ✓Easy IT integration
- ✓Simple protocol (Modbus heritage)
Choose Modbus TCP/IP for SCADA systems, plant-wide networks, remote monitoring, or when integrating industrial equipment with IT systems.
When to Choose EtherNet/IP
Best For:
- •Allen-Bradley PLC systems
- •Automotive manufacturing
- •Food and beverage processing
- •Material handling
- •Packaging machinery
Key Advantages:
- ✓Uses standard unmodified Ethernet
- ✓Seamless IT/OT integration
- ✓CIP protocol consistency (DeviceNet, ControlNet)
- ✓Excellent diagnostics
- ✓Integrated safety (CIP Safety)
Choose EtherNet/IP for Rockwell/Allen-Bradley systems, North American facilities, or when standardizing on CIP family protocols.
Industry Adoption & Use Cases
Modbus TCP/IP
Market Share:25-35% of industrial Ethernet
Primary Industries:
Oil & GasWater/WastewaterBuilding AutomationManufacturingEnergy
Geographic Strength:Worldwide
EtherNet/IP
Market Share:30-35% of industrial Ethernet (dominant in North America)
Primary Industries:
AutomotiveFood & BeveragePackagingMaterial HandlingDiscrete Manufacturing
Geographic Strength:Worldwide, strongest in North America
Need Help Choosing?
Explore detailed guides for both protocols to make an informed decision.