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Omron CJ1W-CTS21-E — PLCs (Programmable Logic Controllers)

Omron CJ1W-CTS21-E Counter Module, 2 Digital Inputs, Screw T

MPNCJ1W-CTS21-E

End of Life

Omron CJ1W-CTS21-E Counter Module, 2 Digital Inputs, Screw Terminal, DIN Rail Mount, 0 to 55°C.

$435.61 – $1,300.48Ref. price · indicative, final on quote

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Omron CJ1W-CTS21-E datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CJ1W-CTS21-E — Identification
Parameter	Value
Series	CJ1W

CJ1W-CTS21-E — I/O
Parameter	Value
Inputs (count and type)	2 - Digital

CJ1W-CTS21-E — Environmental
Parameter	Value
Operating temperature range	0°C~55°C

CJ1W-CTS21-E — Mechanical
Parameter	Value
Mounting type	DIN Rail
Weight	0.441 lb (200.03 g)
Termination style	Screw Terminal

CJ1W-CTS21-E — Other specifications
Parameter	Value
Type	Counter Module

Product details

The CJ1W-CTS21-E: This is a two-input counter module for Omron's CJ-series PLC, accepting up to 2 digital pulse trains for position or event counting. Mounts on the CJ backplane via DIN rail, wired with screw terminals for field-side connections. Operates reliably within 0°C to 55°C ambient, suitable for control cabinet environments.

DIN-rail mount, no additional bracket needed. Use the designated backplane slot; power drawn from the CJ-bus. Screw terminals accept field wiring for encoder or switch inputs. Maintain proper shielding for high-frequency count lines.

Frequently asked questions

What is the function of the CJ1W-CTS21-E?

It is a Counter Module with two digital inputs, designed for the Omron CJ-series PLC platform.

Does the CJ1W-CTS21-E mount on a DIN rail?

Yes, mounting type is DIN Rail.

Can the CJ1W-CTS21-E replace an analog input module like the CJ1W-PTS15?

No. The CJ1W-PTS15 is an Analog Input Module with different wiring and I/O mapping; the CTS21-E is a counter module and cannot perform analog measurements.