Table of Contents
- Overview
- Quick Link
- Key Features
- Communication Methods
- Message Types
- Service Codes
- Object Model
- Data Types
- Error Codes
Overview
EtherNet/IP (Ethernet Industrial Protocol) is a standard ethernet communication protocol for industrial automation. It is based on CIP (Common Industrial Protocol) and supports real-time data exchange in manufacturing environments.
Quick link
Related Protocols: SECS/GEM | Modbus | OPC UA | RTSP
Key Features
- Standard Ethernet: Utilizes standard TCP/IP and ethernet technologies
- Real-time Communication: Real-time data exchange based on UDP
- Scalability: Supports large-scale network configurations
- Interoperability: Compatibility between various vendor equipment
- Security: Provides industrial security features
Communication Methods
| Method | Description | Protocol | Purpose |
|---|
| Explicit Messaging | Client-server communication | TCP | Configuration, diagnostics, non-real-time data |
| Implicit Messaging | Real-time data exchange | UDP | Real-time control data |
| I/O Messaging | I/O data exchange | UDP | Sensor/actuator data |
Message Types
| Type | Description | Characteristics |
|---|
| Request | Request from client to server | Explicit messaging |
| Response | Response from server to client | Explicit messaging |
| I/O Data | Real-time I/O data | Implicit messaging |
| Heartbeat | Connection status check | Periodic messaging |
Service Codes
| Code | Description | Purpose |
|---|
| 0x01 | Get_Attribute_Single | Read single attribute |
| 0x02 | Set_Attribute_Single | Write single attribute |
| 0x03 | Get_Attribute_All | Read all attributes |
| 0x04 | Set_Attribute_All | Write all attributes |
| 0x05 | Reset | Device reset |
| 0x06 | Start | Device start |
| 0x07 | Stop | Device stop |
| 0x08 | Create | Object creation |
| 0x09 | Delete | Object deletion |
| 0x0A | Multiple_Service_Packet | Multiple service packet |
Object Model
| Object | Description | Function |
|---|
| Identity Object | Device identification information | Provides device information |
| Message Router Object | Message routing | Message processing |
| Assembly Object | Data assembly | Data packaging |
| Connection Object | Connection management | Communication connection management |
| TCP/IP Object | TCP/IP configuration | Network configuration |
Data Types
| Type | Description | Size |
|---|
| BOOL | Boolean value | 1 bit |
| SINT | 8-bit integer | 1 byte |
| INT | 16-bit integer | 2 bytes |
| DINT | 32-bit integer | 4 bytes |
| REAL | 32-bit real number | 4 bytes |
| STRING | String | Variable length |
| ARRAY | Array | Variable length |
Error Codes
| Code | Description |
|---|
| 0x00 | Success |
| 0x01 | Invalid Command |
| 0x02 | Insufficient Memory |
| 0x03 | Incorrect Data |
| 0x04 | Invalid Attribute Value |
| 0x05 | Invalid Attribute |
| 0x06 | Service Not Supported |
| 0x07 | Invalid Parameter |
| 0x08 | Lost Connection |
| 0x09 | Invalid Segment |
| 0x0A | Invalid Service Request |