Description
The Omron CJ1W-TER01 is the End Cover (Terminating Plate / End Plate) for SYSMAC CJ-series PLC racks — including CJ1M, CJ2M, CJ2H, and CJ-series expansion racks. It is a mandatory mechanical closure piece installed at the rightmost end of the CJ I/O rack (after the last I/O unit or special module) to:
- Physically seal the open end of the DIN-rail / backplane assembly
- Prevent accidental contact with live terminals on the last module
- Provide a finished, secure appearance and maintain proper module spacing
The CJ1W-TER01 is a passive plastic end plate — no electrical function, no wiring. It snaps onto the right-side end of the last CJ-series module (or onto an empty end-of-rack slot if using the special end bracket). For most standard CJ racks (CPU + I/O units), one CJ1W-TER01 per physical rack (CPU rack or expansion rack) is required.
✅ Important: This is the standard CJ-series End Plate (TER01) — notthe older C200H / CQM1 end cover. It is not a Terminal Block (TB — those are for CJ I/O modules like 6ES7193-… in Siemens; Omron CJ I/O modules have built-in screw/spring terminals). The “Term Block” in your query refers colloquially to “end-of-rack terminating piece.”
Key Features
- Function: Mechanical end closure for CJ-series rack (CPU rack & expansion racks)
- Compatible With: All CJ-series bases — CJ1M, CJ2M, CJ2H CPUs + CJ1W- I/O modules on CJ1W-PA202/PA205 backplanes
- Mounting: Snaps onto right-side end of last CJ module or onto end-of-rack locator (with CJ1W-II101/II201 expansion couplers — TER01 still used at very end)
- Qty Needed: 1 × CJ1W-TER01 per physical rack (e.g., CPU rack = 1 pc; each expansion rack via II101/II201 = 1 pc)
- Country of Origin: Japan (Omron Corporation)
Model & Capability Reference (Omron CJ End Plate vs Related Items)
Model | Type | Used For | Notes |
|---|---|---|---|
CJ1W-TER01 (listed) | End Cover / Terminating Plate | Right end of any CJ-series rack (CPU or expansion) | Always required — 1 per rack |
CJ1W-II101 | Inner Rack Coupler | Connects CPU rack ⇆ Expansion Rack #1 (inside same cabinet) | Used when >10 I/O slots needed — max 3 expansions |
CJ1W-II201 | Outer Rack Coupler | Connects Expansion Rack ⇆ Expansion Rack #2/#3 | Used with II101 as start of expansion chain |
CJ1W-PA202 / PA205 | CJ-series Power Supply Unit | Powers backplane + modules | Not included — CJ CPU rack needs PSU |
⚠️ Critical Notes:
One TER01 Per Rack: If you have a CPU rack + 1 expansion rack → buy 2 × CJ1W-TER01 (one for end of CPU rack — actually CPU rack ends after last I/O module before expansion coupler? Correction: TER01 goes at the physical right end of each assembled rack: CPU rack with modules → TER01 after last module beforeexpansion coupler? No — expansion coupler (II101) occupies the last slot position — you put TER01 after the II101 or after last I/O if no expansion. Simplest: each physically assembled rack (CPU rack, Exp Rack #1, Exp Rack #2, Exp Rack #3) gets its own TER01 at the far right end after the last inserted module/coupler.) Not a Terminal Block: CJ-series I/O modules (CJ1W-ID211, CJ1W-OD211, etc.) have integrated terminals (screw or spring) — they do NOT use separate terminal blocks like Siemens ET 200S. CJ1W-TER01 is purely an end-of-rack plastic cover. Often Forgotten Spare: Many customers buy CJ CPU + PSU + I/O but forget the TER01 — it’s inexpensive but essential for proper installation (some integrators reuse old ones — we recommend new for neat seal). Expansion Rack Rule: If using CJ1W-II101 (inner coupler) + CJ1W-II201 (outer coupler) to build expansion racks — each expansion rack (populated with I/O modules) also needs its own CJ1W-TER01 at the rightmost end. No Electrical Connection: Do NOT attempt to wire anything to TER01 — it’s a dead plastic closure.
Technical Specifications (CJ1W-TER01 — CJ-Series End Cover / Terminating Plate)
Parameter | Specification |
|---|---|
Model / Order Code | CJ1W-TER01 (Omron SYSMAC CJ-series End Plate / Terminating Cover) |
Function | Mechanical end closure for CJ-series PLC rack (CPU or expansion rack) |
Compatible Series | SYSMAC CJ1M, CJ2M, CJ2H, CJ1G, CJ2G — all CJ-series backplanes |
Material | Flame-retardant ABS / Polycarbonate blend (UL94 V-0 typical) |
Color | Light gray / Beige (matches CJ module color) |
Mounting Method | Snap-fit onto right-side end of last CJ module or onto end-of-rack position (works with II101/II201 couplers at rack end) |
Dimensions (W×H×D) | ~ 9 mm (W) × 90 mm (H) × ~ 5 mm (D) (thin profile — matches CJ module end face) |
Weight | ~ 5 g |
Operating Temp. | Same as CJ rack: 0 … +55 °C |
Standards | CE, UL, cUL, KC, RoHS |
Qty Req. per Rack | 1 pc per physical assembled rack (CPU rack, each Expansion Rack) |
Warranty & After-Sales
- Factory new units: 12 months warranty (against breakage / molding defect)
- Refurbished units: 3-6 months warranty (visual inspection — NOS surplus)
- Technical support for:
- Rack composition check (confirm you have 1× TER01 per physical rack: CPU rack + each expansion rack)
- Compatibility confirmation (yes — fits all CJ1M/CJ2M/CJ2H racks — not C200H/CQM1)
- Bundled offer with CJ CPU + PSU + I/O + TER01 (we can assemble a BOM for your project)
- Cross-note: if you also need CJ1W-II101 / II201 expansion couplers for >10-slot systems — available separately
- Optional: CJ1W-PA202/PA205 PSU, CJ2M-CPU11/CPU32, CJ1W-ID211/OD211 I/O modules, CJ1W-II101/II201 expansion couplers, USB A-B cable for CJ2M
Delivery Time
- Standard delivery: 3-5 working days (stock items)
- Express shipping available upon request
Why Choose Our Store
- Genuine Omron CJ-series accessories — correct mold & snap-fit (generic substitutes may not seat properly)
- Global supply network with competitive pricing
- Expertise in Omron CJ-system BOM building (CPU + PSU + I/O count + TER01 + couplers if needed)
- Comprehensive technical documentation (rack assembly diagram showing TER01 position, expansion rack hookup sketch)
- Responsive customer service and support
Applications
- End-of-Rack Closure: Installed at rightmost end of every CJ1M/CJ2M/CJ2H rack — CPU rack & each expansion rack.
- New Panel Build / Retrofit: Often forgotten — ensure you have 1× TER01 per rack when ordering CJ components.
- Spare / MRO: Exact CJ1W-TER01 — snaps onto existing CJ rack to replace lost/missing end cover.
- OEM Skid / Machine Builder: Include in every CJ BOM to guarantee proper mechanical finish.





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