Description
The Omron CJ2M-CPU32 is a high-performance CPU Unit for the SYSMAC CJ2M Series programmable logic controller, designed for mid-range machine automation requiring fast execution, built-in USB programming port, and onboard serial communications.
- CJ2M-CPU32 → Program capacity 60K steps (120K bytes), Data memory 128K words, Execution time 0.04 µs/boolean instruction (LD), Built-in USB port (to PG/PC) + RS-232C port (9-pin D-Sub — can be used for host link, NT link, serial printer, or protocol macro), Supports CJ-series I/O units (CJ1W-___) on the same rack — up to 40 units (depending on power supply & rack capacity) in a single CJ2M rack (max 3 expansion racks with CJ1W-II101/II201).
- The CJ2M series is the successor to CJ1M — faster, larger memory, better built-in connectivity (USB instead of peripheral bus only), and improved interrupt handling.
- Compatible with CX-Programmer V9.0+ (recommend V9.6x / CX-One package). Programs from CJ1M can usually be converted/opened in CJ2M with minor adjustments (timers/retentive bits mostly compatible — check reserved words).
Typical use: Packaging machines, semiconductor handlers, assembly stations, printing presses — anywhere CJ-series compactness + speed + built-in serial for HMI/touchpanel link is valued.
Key Features
- Program Capacity: 60K steps (120 KB)
- Data Memory: 128K words (DM area DM 0–32767 + extended DM D30000–D65535 depending on settings)
- Basic Instruction Execution: 0.04 µs (LD instruction)
- Built-in Ports: 1 × USB (Mini-B or Type B? CJ2M CPU front = USB Type B (square printer-like) for PC connection via CX-Programmer); 1 × RS-232C (9-pin D-Sub male — configurable as Host Link, NT Link, No-protocol (RS-232C), or Protocol Macro)
- Max. I/O Points (Physical): 2560 points (CJ2M CPU itself — actual limited by I/O modules & power supply capacity; typical CJ rack holds 10–20 I/O units × 16–32 pts each)
- Expansion: Up to 3 expansion racks via CJ1W-II101 (II101 = inner rack coupler, II201 = outer — check Omron manual)
- Country of Origin: Japan (Omron Corporation)
Model & Variant Reference (Omron CJ2M CPU Family — Context)
Model | Program Cap. | DM Words | Built-in Comms | Best For |
|---|---|---|---|---|
CJ2M-CPU32 (listed) | 60K steps (120KB) | 128K words | USB + RS-232C | General-purpose — built-in serial for HMI/printer/scanner |
CJ2M-CPU31 | 60K steps | 128K words | USB only (no RS-232C) | Cost-sensitive — no need for onboard serial |
CJ2M-CPU33 | 60K steps | 128K words | USB + RS-485 (2-wire, isolated — for Multilink / Host Link / Modbus RTU slave) | Need RS-485 multi-drop (up to 32 nodes) for HMI/temp controllers |
CJ2M-CPU13 (older CJ1M) | 20K steps | 32K words | Peripheral (old round) + RS-232C | Legacy — shown for contrast |
⚠️ Critical Notes:
Technical Specifications (CJ2M-CPU32 — SYSMAC CJ2M CPU Unit with USB + RS-232C)
Parameter | Specification |
|---|---|
Model / Order Code | CJ2M-CPU32 (Omron SYSMAC CJ2M CPU Unit) |
Series | SYSMAC CJ2M (successor to CJ1M) |
Program Capacity | 60 K steps (120 KB — user program + comments stored in flash) |
Data Memory (DM) | 128 K words (DM 0–32767 standard + Extended DM D30000–D65535 — depends on settings; 128K total) |
Work / Timer / Counter | Timers: 4096 (T0–T4095); Counters: 4096 (C0–C4095); HR: 8192 bits (H0–H511.15); AR: 1024 bits (A0–A63.15); LR: 1024 bits (L0–L63.15) |
Instruction Execution Time | 0.04 µs (boolean LD); 0.12 µs (MOV etc. — see catalog for detailed inst. timings) |
Built-in Interfaces | Front: 1 × USB Type B (for CX-Programmer — USB 2.0 Full Speed); Rear/side: 1 × RS-232C (9-pin D-Sub male — configurable protocol) |
Max. I/O Points (Physical) | 2560 points (CJ2M limit — actual limited by PSU & modules: typical 160–640 pts in one rack) |
Max. Expansion Racks | 3 (using CJ1W-II101 inner coupler + CJ1W-II201 outer — total 4 racks incl. CPU rack) |
Power Supply (Backplane) | Requires CJ-series PSU: CJ1W-PA202 (100–240V AC in, 5V/24V DC out) or CJ1W-PA205 (24V DC in) — NOT included with CPU |
Battery Backup | Super capacitor (holds retentive area ~ 20 days); Optional CJ1W-BAT01 battery for extended hold (typically 5 yrs shelf / 1–2 yr backup) — recommended for retentive DM |
Operating Temp. | 0 … +55 °C (no freezing/dewing) |
Dimensions (W×H×D) | 31 mm (W) × 90 mm (H) × 65 mm (D) — standard CJ CPU width (1 slot = 31 mm) |
Weight | ~ 0.09 kg |
Standards | CE, UL, cUL, KC, Lloyd’s (some versions), RoHS |
Software | CX-Programmer V9.0+ (part of CX-One) — recommend V9.6x or later for full CJ2M support |
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty (power-up + program download/monitor + RS-232C loopback test)
- Technical support for:
- Rack composition (CJ1W-PA202/PA205 PSU selection, I/O unit count per PSU 5V current budget)
- CX-Programmer connection (USB driver install — Omron USB driver in CX-One; set “USB” in PLC/PC Interface → Auto-detect)
- RS-232C cabling & protocol setup (Host Link / NT Link / No-Protocol Macro — pinout XW2Z-… cross ref)
- Memory backup (install CJ1W-BAT01 if long power-loss retention needed; explain super cap vs battery)
- I/O allocation & addressing (CIO word per slot — auto vs manual)
- Migration note (CJ1M → CJ2M program mostly compatible — open in CX-P & adjust if using old special I/O)
- Optional: CJ1W-PA202/PA205 PSU, CJ1W-BAT01 battery, USB A-B cable, RS-232C null-modem/XW2Z cable, CJ-series I/O modules (CJ1W-ID211/OD211 etc.)
Delivery Time
- Standard delivery: 3-5 working days (stock items)
- Express shipping available upon request
Why Choose Our Store
- Genuine Omron SYSMAC CJ2M CPUs — not gray-market with counterfeit flash (program loss risk)
- Global supply network with competitive pricing
- Expertise in Omron CJ-series system building (PSU sizing, I/O module selection, USB/RS-232C comms setup, CX-Programmer tips)
- Comprehensive technical documentation (CJ2M I/O slot addressing table, RS-232C DB9 pinout, CX-P USB connection steps)
- Responsive customer service and support
Applications
- Packaging / Labeling Machines: Fast scan time + built-in RS-232C for color touchpanel (NT/NS/NA series HMI via Host Link or NT Link).
- Semiconductor / Assembly Handler: Event-driven interrupts, large DM for product recipe storage (128K words).
- Printing / Converting Lines: Coordinate multiple axes via option boards (CJ1W-NC□□ — add Motion Control unit if needed) + HMI link.
- Retrofit / Spare: Drop-in for CJ1M-CPU2x (mostly code-compatible) — faster execution, USB programming, larger memory.
- Test Stands / R&D Benches: Easy USB connectivity to laptop for quick development.
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