Q172DSCPU Mitsubishi Motion Controller

16-axis motion controller CPU module for Mitsubishi MELSEC-Q series, adopting a dual-CPU architecture (sequential CPU + motion CPU for parallel processing). It connects to servo amplifiers via the SSCNET III/H high-speed servo network, designed specifically for complex motion control applications.

Model Code Explanation

Code Segment	Description
Q	MELSEC-Q Series PLC System
172	Series number for 16-axis motion controller
DS	Dual-CPU architecture (sequential + motion) + SSCNET III/H interface
CPU	Central Processing Unit module

主な仕様

Item	Details
Controlled Axes	まで 16 synchronous axes, expandable to 96 axes (with additional motion CPU modules)
Network Interface	SSCNET III/H (1 system), high-speed real-time communication
CPU Architecture	Dual-core high-performance RISC CPU, parallel sequential and motion control
Program Memory	10 MB (motion program + user program)
Operation Cycle	Default 1 MS (adjustable)
Control Modes	Position / speed / トルク制御, electronic cam, electronic gear, linear / circular / helical / 3D spline interpolation, PTP control
I/Oインターフェース	8-point DC24V output (2A/point), 12 ms response time
Power Consumption	DC5V, 1.44あ
寸法	120.5(H)×27.4(W)×120.3(D)mm, weight 0.38kg
Controllable Modules	Q172DLX, Q172DEX and other motion control modules

Direct Replacement Solutions
Upgrades within Mitsubishi (Officially Recommended)

Replacement Model	Features	応用
Q172DSCPU	Original model, replaces older models such as Q172CPUN / Q172HCPU	Maintenance of existing systems with minimal modifications
R16MTCPU (iQ‑R Series)	New‑generation 16‑axis motion controller, performance improved by 30%, compatible with all iQ‑R modules	Full system upgrade for higher performance and expandability
Q173DSCPU	32‑axis version, otherwise same specifications as Q172DSCPU	Applications requiring up to 32 axes

Cross‑Brand Equivalent Replacements

ブランド	Replacement Model	Key Matching Points
シーメンス	SIMOTION D445‑2 DP/PN	16‑axis motion control, PROFIBUS / PROFINET, supports complex interpolation
Rockwell	Kinetix 5500 + Logix5380	16‑axis synchronous control, EtherNet/IP, integrated safety functions
シュナイダー	Lexium 62 + M340 PLC	16‑axis motion control, CANopen / EtherCAT, cost‑effective

代表的な用途
High‑precision multi‑axis synchronization: Electronic processing equipment, semiconductor manufacturing, printing & 包装機械
Complex trajectory control: Robots, CNC工作機械, laser cutting / welding equipment
High‑speed positioning: Chip mounters, dispensers, precision assembly lines
Electronic gear / cam applications: 繊維機械, label printing machines, metal processing equipment
Automated production lines requiring parallel logic and motion control
注意事項
システムの互換性: Must be used with a Q‑series PLC CPU (例えば, Q03UDVCPU) to form a dual‑CPU system
Servo Amplifier Matching: Only supports Mitsubishi servo amplifiers with SSCNET III/H interface (例えば, MR‑J4 series)
Expansion Limit: Max 16 servo amplifiers; add Q172DSCPU or upgrade to Q173DSCPU for more axes
Programming Software: GX Works2 / GX Works3, with dedicated motion control libraries
Upgrade Suggestions: When migrating to iQ‑R series (R16MTCPU), check program compatibility and hardware interface differences

Q172DSCPU ↔ R16MTCPU Core Comparison + Configuration Guide

Key Parameter Comparison

Item	Q172DSCPU	R16MTCPU
シリーズ	Q Series Motion CPU	iQ‑R Series Motion CPU
Max Axes	16	16
Servo Network	SSCNET III/H	SSCNET III/H
Architecture	Dual CPU (sequential + motion)	Single CPU integrating logic + motion, higher performance
Program Capacity	10MB	32MB
Operation Cycle	Standard 1ms	Standard 0.5ms, up to 0.2ms
Programming Software	GX Works2 / Works3	GX Works3
Backplane Bus	Q Bus	iQ‑R High‑Speed Bus
互換性	Q‑series base units / modules only	iQ‑R series base units / modules only
Positioning	Mature, stable, spare‑part oriented	Latest generation, high speed & precision, preferred for new projects