What an EDS File Is
An Electronic Data Sheet (EDS) is a standardized text file that describes an EtherNet/IP device’s supported CIP objects, parameters, Assembly Objects, and configuration options. PLCs and scanner software use EDS files to auto-populate device settings during connection setup.
Why EDS Files Matter
Without an EDS file, PLC scanner configuration must be done manually — entering Assembly instance numbers, byte sizes, and connection parameters by hand. This is error-prone and time-consuming.
With an EDS file, the PLC automatically:
- Detects the device type and vendor
- Populates Assembly instance numbers and sizes
- Sets default connection parameters
Where to Get EDS Files
| Source | Details |
|---|---|
| QuickServer web UI | Download from the device’s configuration page |
| FieldServer documentation | Provided with the gateway |
| ODVA EDS library | Community repository at odva.org |
| Device vendor | Request from the field device manufacturer |
Common Issues
- Missing EDS file — PLC can’t auto-configure → requires full manual Assembly setup
- Wrong EDS revision — EDS doesn’t match device firmware → Assembly size mismatches
- EDS not imported — file exists but hasn’t been added to the PLC programming software
[!TIP] Always import the EDS file into the PLC programming software before adding the EtherNet/IP device to the scanner configuration.