Omron CS1W-CN223 — CS1 I/O Connecting Cable, 2 m
SKU: CS1W-CN223USD 100.00
2 m I/O connecting cable for CS1 series expansion racks, links CPU rack to first expansion rack or daisy-chains expansion racks up to 12 m total expansion. Used with CS1W-BC backplanes.
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Product Overview
The CS1W-CN223 is a 2-metre I/O connecting cable in the CS1W-CN@@3 family, used to link a CS1 CPU rack to a CS1 expansion rack, or to daisy-chain multiple CS1 expansion racks together. Both ends use the same high-density connector that mates with the I/O bus connector on the CS1W-BC@@3 expansion backplanes and on the right-hand side of the CPU rack. Maximum total expansion distance with all CS1W-CN@@3 cables summed together is 12 m — for anything longer, you need a CS1W-IC101 I/O Control Unit + CS1W-II101 I/O Interface Units in long-distance expansion mode, which lets you reach 50 m per segment.
Naming convention: what the @@ in CS1W-CN@@3 means
All CS1W-CN@@3 cables share the same connector pinout and electrical spec — only the length changes. The @@ digits are a length code in decimetres: CS1W-CN313 is 0.3 m, CS1W-CN713 is 0.7 m, CS1W-CN223 is 2 m (this SKU), CS1W-CN323 is 3 m, CS1W-CN523 is 5 m, CS1W-CN133 is 10 m, and CS1W-CN133B2 is 12 m.
CS1W-CN223 in the rack-to-rack daisy chain
A CS1 system can have up to 7 expansion racks per CPU rack, with up to 12 Units per expansion rack (CS1W-BC083 / BC093 8-slot or 9-slot backplanes are most common). The CPU rack's right-hand I/O connector cables out to the first expansion rack's left-hand I/O connector (CS1W-CN223 covers this span when the racks are about 2 m apart); the first expansion rack's right-hand connector then cables out to the second expansion rack, and so on.
When CS1W-CN223 is the wrong cable
Three common pitfalls. First, the CS1W-CN223 is not a peripheral-port or RS-232C programming cable — the CS1W-CN226 (2 m, peripheral port to DB-9) and CS1W-CN626 (6 m) are the cables used to connect CX-Programmer to the CPU's peripheral USB/peripheral serial port. The connectors look similar but the pinout is different. Second, do not use a C200H-CN@@1 cable in a CS1 expansion — C200H I/O cables were for the older C200H/C200HS racks and have a different connector pitch.
Key Features
- 2 m I/O connecting cable for CS1 series expansion rack systems
- CS1W-CN@@3 family member — same connector pinout as 0.3 m, 0.7 m, 3 m, 5 m, 10 m.
- Links CPU rack to first expansion rack or expansion rack to expansion rack
- Maximum total expansion distance 12 m across all CS1W-CN@@3 cables combined
- Mates with I/O bus connector on CS1W-BC@@3 expansion backplanes
- Shielded construction for industrial EMC environments
- In-cabinet use only — connectors are not IP-rated for exterior routing
- Maximum 7 expansion racks per CPU rack
- SKU: CS1W-CN223
- Series: CS1W-CN@@3 (CS1 I/O Connecting Cable family)
Best-Fit Applications
- Connecting a CS1H CPU rack to a CS1W-BC083 expansion rack in a two-cabinet layout
- Replacing a degraded CS1W-CN@@3 cable during troubleshooting of intermittent I/O bus errors
- Standardised spare for legacy CS1 installations still in active service
- Cabinet rework when relocating a CS1 expansion rack by ~1.5 to 2 m
Buying Checklist
- Pick CS1W-CN223 when CPU rack and first expansion rack are ~1.5–2 m apart
- Pick CS1W-CN313 when both racks are in the same cabinet close together
- Pick CS1W-CN713 when racks are in the same cabinet with a wiring channel between
- Pick CS1W-CN323 or CS1W-CN523 for larger cabinet separations
- Pick CS1W-CN133 or CS1W-CN133B2 for maximum allowed separation
- Do NOT use CS1W-CN223 as a programming cable — that is CS1W-CN226 or CS1W-CN626
Technical Specifications
| Model | CS1W-CN223 |
|---|---|
| Series | CS1W-CN@@3 (CS1 I/O Connecting Cable family) |
| Type | I/O connecting cable for rack expansion |
| Length | 2 m (6.56 ft) |
| Connector Type | High-density I/O bus connector, both ends |
| Compatible Backplanes | CS1W-BC@@3 (CS1 expansion backplanes) |
| Compatible CPUs | CS1G and CS1H CPU units |
| Maximum Total Expansion Distance | 12 m (all CN@@3 cables combined) |
Resources & Downloads
FAQ for CS1W-CN223
Is the CS1W-CN223 cable 0.3 m or 2 m long?
The CS1W-CN223 is 2 metres long, not 0.3 m. The '3' at the end of the part number denotes the CS1W-CN@@3 cable family (rack-to-rack I/O cable), not the length. The 0.3 m cable in the same family is the CS1W-CN313 — the '3' there indicates 3 decimetres (30 cm). The length code for the CS1W-CN223 is '22' = 2.2 m rounded to 2 m nominal.
What is the difference between CS1W-CN223 and CS1W-CN226?
They are different cable families for different jobs. CS1W-CN223 is an I/O connecting cable — it carries the rack-to-rack I/O bus signal between a CS1 CPU rack and a CS1 expansion rack. CS1W-CN226 (2 m) and CS1W-CN626 (6 m) are peripheral-port cables — they connect a programming console (CX-Programmer on a PC) to the CS1 CPU's peripheral serial port for online programming.
What is the maximum total length of CS1W-CN@@3 cables I can use?
12 metres total, summed across all CS1W-CN@@3 cables in the expansion chain. So you can mix CS1W-CN313 (0.3 m) + CS1W-CN713 (0.7 m) + CS1W-CN223 (2 m) + CS1W-CN523 (5 m) + CS1W-CN223 (2 m) for a total of 12 m between the CPU rack and the farthest expansion rack. Beyond 12 m the I/O bus signal degrades and the CS1 CPU will report an I/O bus error (I/O Verification Error or I/O Bus Error) at startup.
Can I use a CS1W-CN223 cable with a CS1G CPU or only CS1H?
Both — CS1W-CN223 works with CS1G-CPU@@@-EV1 and CS1H-CPU@@@-EV1 CPU units, with all CS1W-BC@@3 expansion backplanes, and with CS1W-BI@@@ long-distance expansion backplanes. It also works with the newer CJ2M-CPU@@@ CPUs in CS/CJ-series expansion interconnection mode, where a CJ2M CPU rack expands into a CS1 expansion rack (used during phased CS1-to-CJ2 migration). The CS1W-CN223 cannot be used with C200H or C200HS legacy racks — those used the C200H-CN@@1 cable family with a different connector pitch.
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