Omron CJ1W-ID232 — 32-Pt DC Input, MIL Connector
SKU: CJ1W-ID232USD 65.00
CJ-series 32-point 24 VDC digital input unit with MIL 40-pin connector for US-standard flat-ribbon wiring. 4.1 mA per point, 5.6 kOhm impedance, 16 points per common, 8 ms ON/OFF response time, 2 CIO words per unit.
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Product Overview
The CJ1W-ID232 is Omron's 32-point 24 VDC digital input unit for the CJ-series PLC platform with a MIL 40-pin connector on the front face — the US-standard counterpart to the CJ1W-ID231 (Fujitsu connector, already done). The MIL connector is the typical 40-pin polarized ribbon-style connector with crimp-on sockets, accepting the standard 40-pin flat-ribbon cable assembly (per MIL-DTL-83503) or the Omron G79-@@@C pre-wired cable assembly — which lets the engineer land 32 inputs in a 31 mm DIN-rail slot using bulkhead wiring methods familiar to North American control-panel builders. For installations where the existing wiring scheme uses MIL connectors (legacy Allen-Bradley 1771 I/O, PLC-5, SLC-500), the CJ1W-ID232 is the right pick for a CJ-series retrofit.
Decoding CJ1W-ID232 within the ID2xx family
The CJ1W-ID@@@ model code follows four positional digits: __2_ = 32-pt density (vs 1_ = 16-pt for ID2_1_, 6_ = 64-pt for ID2_6_); __3_ = MIL connector (vs 1 = removable TB for ID211/ID212, 1 = Fujitsu for ID231/ID261); __1_ = standard (vs 3 = high-speed with 15 us quick-response on inputs 0-7). The ID232 codepoint thus decodes as 32-point standard DC input with MIL connector.
MIL connector vs Fujitsu connector — when to choose ID232
The MIL 40-pin connector on the CJ1W-ID232 follows the MIL-DTL-83503 (formerly MIL-C-83503) flat-ribbon standard — a 40-pin polarized socket with a centerbump polarization key, accepting standard 40-pin flat-ribbon cable assemblies. The Fujitsu FCN-361J040-AU connector on the CJ1W-ID231 (already done) follows the FCN-360 series Japanese standard — similar density but different pin geometry, polarization, and crimp-on sockets. Both connectors are widely available as pre-wired cable assemblies, but the MIL connector is more common in North American installations while the Fujitsu is more common in Asian installations.
Compatibility with input filter and quick-response settings
On a CJ2-series CPU, the CJ1W-ID232 input filter is set in the PLC Setup: 0 / 0.5 / 1 / 2 / 4 / 8 / 16 / 32 ms selectable. The default 8 ms is the right pick for limit-switch, push-button, and E2E-X inductive sensor inputs — those signals have plenty of edge duration. For high-speed inputs (registration-mark detection, encoder Z-pulse, high-speed object counting), the engineer should pick the CJ1W-ID233 (32-pt HIGH-SPEED with MIL connector) instead — it supports 15 us quick-response on inputs 0-7, plus interrupt-input assignment on the CJ2 CPU.
Key Features
- CJ-series 32-point 24 VDC digital input unit
- MIL 40-pin connector on the front face for US-standard flat-ribbon wiring
- Accepts standard 40-pin flat-ribbon cable assemblies
- Compatible with Omron G79-@@@C pre-wired cable assemblies
- Compatible with CJ1M, CJ2M, CJ2H, and NJ-series CPUs
- Bidirectional optocoupler input - NPN sink or PNP source field devices accepted
- 24 VDC rated input
- 5.6 kOhm input impedance, 4.1 mA typical input current at 24 VDC
- SKU: CJ1W-ID232
- Series: CJ1W I/O Basic Units (CJ-series expansion I/O)
- Voltage: 24 VDC
- I/O: 32 I/O
Best-Fit Applications
- 32 limit switches + proximity sensors on a stamping press - each of 8 axes contributes 4 sensors for 32.
- Push-button + selector-switch panel on a CNC machine tool - 32 inputs from 16 push-buttons + 16 selector switches controlling.
- Pneumatic-cylinder position feedback on an assembly line - 32 reed-switch or magnetic-position-sensor inputs, allowing the PLC to verify each cylinder's.
- Encoder-Z and home-position inputs on a multi-axis servo system - 32 inputs from 4 servo axes; for high-speed Z-pulse capture.
Buying Checklist
- Pick CJ1W-ID232 for 32-pt 24 VDC standard input with MIL connector - North American control-panel builders using flat-ribbon cable
- Pick CJ1W-ID231 for 32-pt 24 VDC input with Fujitsu connector - Japanese-style wiring with FCN-361J040-AU
- Pick CJ1W-ID211 for 16-pt 24 VDC input with removable TB - easier field-wiring, lower up-front cost
- Pick CJ1W-ID212 for 16-pt HIGH-SPEED 15 us quick-response input - for registration-mark detection, encoder Z-pulse
- Pick CJ1W-ID233 for 32-pt HIGH-SPEED MIL connector - supports both 15 us quick-response and interrupt-input assignment on CJ2 CPU
- Pick CJ1W-ID262 for 64-pt MIL connector - for very-high-density panels
Technical Specifications
| Model | CJ1W-ID232 |
|---|---|
| Series | CJ1W I/O Basic Units (CJ-series expansion I/O) |
| Type | 32-point 24 VDC digital input unit, MIL connector |
| Input Points | 32 points |
| Common Configuration | 16 points per common (2 commons per unit - word 1 = CH0-15, word 2 = CH16-31) |
| Connector Type | MIL 40-pin socket (per MIL-DTL-83503 / FCN-360M040-AU or compatible); 1 connector per unit |
| Recommended Cable | Standard 40-pin flat-ribbon cable (1.27 mm pitch, per MIL-DTL-83503) or Omron G79-@@@C pre-wired cable assembly |
| Rated Input Voltage | 24 VDC |
| Operating Voltage Range | 20.4 to 26.4 VDC |
| Input Impedance | 5.6 kOhm |
| Input Current (typical at 24 VDC) | 4.1 mA per point |
| ON Voltage / ON Current | 14.4 VDC min / 3 mA min |
| OFF Voltage / OFF Current | 5 VDC max / 1 mA max |
| Interrupt Input Capability | NOT supported (use CJ1W-ID233 for interrupt-input assignment on CJ2 CPU) |
| Internal Current Consumption | 90 mA at 5 VDC (from CJ bus) |
Resources & Downloads
FAQ for CJ1W-ID232
What's the difference between CJ1W-ID232 and CJ1W-ID231?
Both are 32-point 24 VDC standard input units for the CJ-series PLC with the same electrical specifications (4.1 mA per point, 5.6 kOhm impedance, 8 ms ON/OFF filter, 16 pts/common, 2 CIO words, 90 mA bus current). The differences are: (a) Connector type - ID231 uses a Fujitsu FCN-361J040-AU 40-pin connector (Japanese standard), ID232 (this SKU) uses a MIL 40-pin connector per MIL-DTL-83503 (US standard).
Does the CJ1W-ID232 support quick-response inputs on a CJ2 CPU?
No - the CJ1W-ID232 is a standard-speed input unit. Quick-response input (15 us ON / 90 us OFF) and interrupt-input assignment is supported only on the high-speed input units: CJ1W-ID212 (16-pt removable TB, already done), CJ1W-ID233 (32-pt MIL connector), CJ1W-INT01 (legacy 16-pt interrupt-only unit).
What cable assembly do I need for the CJ1W-ID232?
The CJ1W-ID232 accepts a MIL 40-pin connector on the front face (per MIL-DTL-83503, polarized with centerbump). Two cable options: (a) Standard 40-pin flat-ribbon cable - any 1.27 mm pitch 40-conductor flat-ribbon cable with crimp-on sockets (3M 89140 series, Harting, Amphenol). This is the lowest-cost option and works with IDC mass-termination tooling. (b) Omron G79-@@@C pre-wired cable assembly - has the MIL 40-pin connector on one end and free leads on the other for landing on a remote terminal block.
Can I use the CJ1W-ID232 with both NPN and PNP sensors on the same unit?
Yes - the CJ1W-ID232 has 2 separate commons (COM1 for CH0-15, COM2 for CH16-31), each 16-pt group independently polarity-selectable. Wire COM1 to +24 VDC for NPN sensors in the CH0-15 group; wire COM2 to 0 V for PNP sensors in the CH16-31 group. This allows mixed NPN+PNP inputs on the same unit, aligned to 16-pt boundaries. The bidirectional optocoupler inside the ID232 handles the polarity at each COM terminal but does not allow per-point polarity selection within a single group.
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