QD77MS4 Overview
The Mitsubishi QD77MS4 is a 4-axis Simple Motion Module for MELSEC-Q PLCs, using SSCNET III/H to command Mitsubishi MR-J4/MR-JE servos with fiber-optic reliability.
Key Capabilities
- 4 axes of positioning, synchronous control, cam, and speed/torque control
- 0.88 ms operation cycle for deterministic multi-axis interpolation
- SSCNET III/H communication with fully closed loop and absolute position support
- Simple Motion Mode setup in GX Works2 or GX Works3
2026 Smart Factory Benefits
IT/OT convergence is easier with module diagnostics, event history, and predictive maintenance data. The QD77MS4 reduces wiring, commissioning time, and lifecycle cost for packaging, assembly, material handling, and robotics.
ROI tip: Pair with MR-J4-B(-RJ) servos for torque limit switching, cam data restoration, and mark detection to improve throughput without a full motion controller.
