DRO Scale Pinout Library
This library contains known pinouts for popular DRO scale manufacturers and models. Use these as reference when connecting scales to TouchDRO adapters.
Manufacturer Pinout Guides
Generic Chinese (Ditron Compatible)
The most common pinout pattern used by 99% of Chinese glass scales. Covers Ditron, Easson, and similar brands.
- Standard 9-pin D-sub connector
- 5V TTL quadrature signals
- Compatible with most TouchDRO adapters
Heidenhain Compatible
Pinouts for Heidenhain scales and compatible alternatives.
- 15-pin D-sub for analog scales
- 9-pin for incremental scales
- Various connector types
Mitutoyo AT Series
Complete pinout reference for Mitutoyo AT-series linear scales.
- AT1xx (sin/cos analog)
- AT2xx (quadrature digital)
- AT7xx (proprietary digital)
Mitutoyo Digimatic/SPC
Pinouts for Mitutoyo's digital caliper and SPC output devices.
- Standard 4-pin Digimatic connector
- SPC output variations
- Voltage and timing specifications
Renishaw
Renishaw scale pinouts and connection information.
- TONiC series encoders
- Linear scale systems
- Various signal types
Magnescale
Sony Magnescale pinout reference.
- Magnetic scale systems
- Various connector types
- Signal specifications
Other Legacy Brands
Pinouts for various other manufacturers and legacy systems.
- Newall scales
- Fagor systems
- Acu-Rite scales
- Other legacy brands
How to Use This Library
- Identify your scale: Look for manufacturer markings and model numbers
- Find the matching guide: Use the links above to find your manufacturer
- Verify the pinout: Compare connector type and pin count
- Check compatibility: Ensure your TouchDRO adapter supports the signal type
- Wire carefully: Follow the pinout exactly to avoid damage
Unknown Scale?
If your scale isn't listed here:
- Try the generic Chinese pinout first (works for most scales)
- Use our reverse engineering guide
- Check the signal family reference to understand your scale type
- Contact TouchDRO support for assistance
Safety Notes
- Always power off before making connections
- Double-check pinouts before applying power
- Use proper ESD precautions
- Start with low voltage when testing unknown scales
Contributing: If you have pinout information for scales not listed here, please share it with the TouchDRO community.