Quick Answer
What is the Topcon 3D-MC2?
See also: Leica MC1 Machine Control
See also: Trimble GCS900 Machine Control
The Topcon 3D-MC2 is a GNSS machine control system for dozers and graders delivering 20-25mm 3D blade accuracy using the GX-55 in-cab display and MAGNET Earthworks field software.
Topcon 3D-MC2 — Complete Specs, Manual & Guide
Category: Machine Control | Brand: Topcon | Model: 3D-MC2
The Topcon 3D-MC2 is Topcon's production machine control platform for earthmoving equipment. Using GNSS positioning and high-accuracy blade slope sensors, the 3D-MC2 automatically drives blade hydraulics to design elevation, eliminating grading stakes and dramatically reducing rework on road, site, and drainage projects.
Topcon 3D-MC2 Full Specifications
| GNSS accuracy (3D) | 20-25mm with base station RTK |
| GNSS update rate | 20Hz |
| GNSS constellations | GPS, GLONASS, Galileo, BeiDou |
| Display | Topcon GX-55 — 5.7" (14.5cm) color LCD |
| Blade sensor | Dual-axis slope sensor (±45 degree range) |
| Communication | Topcon LN-100S base station or HiPer HR |
| Operating voltage | 10-36VDC |
| Operating temperature | -30°C to +70°C |
| Connectivity | Wi-Fi, Bluetooth, USB |
Accessories & Part Numbers
- GX-55 — Topcon 3D-MC2 in-cab display unit
- HiPer HR — Recommended GNSS rover for 3D-MC2 machine antenna
- LN-100S — Topcon scanning base station
- MAGNET Earthworks — Job coordination software for 3D-MC2
- AGS-1 — Automatic grade sensor for fine grade applications
Error Codes Quick Reference
| ERR01 | GNSS antenna not detected — check antenna cable |
| ERR02 | No RTK corrections — check base station and radio link |
| ERR03 | Slope sensor overload — sensor angle exceeded maximum range |
| ERR10 | Display communication error — reboot GX-55 |
Frequently Asked Questions — Topcon 3D-MC2
What GNSS accuracy does the Topcon 3D-MC2 provide?
The 3D-MC2 achieves 20-25mm 3D blade accuracy using RTK corrections from a Topcon base station. At 20Hz update rate, the system responds quickly to terrain changes to maintain design grade.
What machines can the 3D-MC2 be installed on?
The 3D-MC2 installs on Cat, Komatsu, John Deere, and Case dozers and motor graders using machine-specific mounting kits. Hydraulic valve kits are machine-specific and must be ordered separately.
How does the 3D-MC2 connect to a base station?
The 3D-MC2 receives RTK corrections from a Topcon HiPer HR or LN-100S base station via UHF radio or cellular network. The base station must be set up on a known control point and remain stationary during machine operations.
What design file formats does the 3D-MC2 accept?
The 3D-MC2 GX-55 display accepts LandXML surface files and Topcon native (.tp3) design files. Design surfaces are prepared in MAGNET Earthworks office software and transferred via USB or Wi-Fi.
Related models: Leica MC1 | Trimble GCS900
Track your 3D-MC2 calibration dates, service history, and field verification records with Gradelog's Equipment Registry. Free to start at gradelog.com.
