Part of the Omron CJ-Series PLCs series — see the full model table, lifecycle status and replacement parts.
Omron CJ1W-MD232 — 16 In/16 Out Mixed
SKU: CJ1W-MD232USD 142.00
CJ-series 16 DC inputs + 16 PNP sourcing outputs in one slim 31 mm slot. 0.5 A/point, MIL connector, short-circuit alarm.
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Product Overview
The Omron CJ1W-MD232 puts 16 DC inputs and 16 PNP (sourcing) transistor outputs on a single 31 mm slim slot for CJ-series PLCs. It is manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
0.5 A per output point, 2 A per module maximum Slim 31 mm slot — half the width of a 64-point module 130 mA internal current draw from the CJ backplane at 5 VDC ON/OFF response time adjustable from 0 to 32 ms in the CPU settings
Key specs: Model CJ1W-MD232; Module Type Mixed digital I/O (DC input + transistor output); Input Points 16 DC inputs, 1 common; Output Points 16 PNP (sourcing) outputs, 1 common; Input Voltage / Current 24 VDC, 7 mA per point; Output Load Voltage 12 to 24 VDC; Max Load Current 0.5 A per point, 2 A per unit; Connection MIL connector, harness sold separately.
Key Features
- 0.5 A per output point, 2 A per module maximum
- Slim 31 mm slot — half the width of a 64-point module
- 130 mA internal current draw from the CJ backplane at 5 VDC
- ON/OFF response time adjustable from 0 to 32 ms in the CPU settings
- SKU: CJ1W-MD232
- Series: CJ1W I/O unit for CJ-series PLCs
- Voltage: 24 VDC
- I/O: 16 I/O
Best-Fit Applications
- OEM option panel where input and output count change between machine variants
- Utility skid combining level switches, pressure switches, and a couple of relay coils
- Carton sealer station on a packaging line driving one heater and a few sensors
Buying Checklist
- Choose CJ1W-MD232 for 16-in/16-out PNP sourcing on a single slim 31 mm slot; pick CJ1W-MD231 if you need NPN sinking instead.
- Use the per-point short-circuit alarm to catch a stuck relay coil or miswired output before it drops the rest of the bank.
- Pick a 32- or 64-point dedicated input or output module if you only need I/O on one side — it is cheaper per point.
Technical Specifications
| Model | CJ1W-MD232 |
|---|---|
| Series | CJ1W I/O unit for CJ-series PLCs |
| Module Type | Mixed digital I/O (DC input + transistor output) |
| Input Points | 16 DC inputs, 1 common |
| Output Points | 16 PNP (sourcing) outputs, 1 common |
| Input Voltage / Current | 24 VDC, 7 mA per point |
| Output Load Voltage | 12 to 24 VDC |
| Max Load Current | 0.5 A per point, 2 A per unit |
| Connection | MIL connector, harness sold separately |
| I/O Words | 2 (1 input word + 1 output word) |
| Protection | Per-point short-circuit detection with alarm output |
| Internal Current Draw | 130 mA at 5 VDC (from backplane) |
| Operating Temperature | 0 to +55 °C |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for CJ1W-MD232
What is the difference between CJ1W-MD232 and CJ1W-MD231?
MD232 is PNP sourcing (outputs source positive voltage to the load) and MD231 is NPN sinking (outputs switch the load to 0 V). Both are 16-in/16-out MIL-connector modules in the same slim 31 mm slot — pick the one that matches your panel's wiring convention.
Does the CJ1W-MD232 detect a short circuit on each output?
Yes. The MIL-connector MD232 has per-point short-circuit detection and a unit-level alarm flag that the CJ CPU can read. A shorted output is shut down individually and does not drop the rest of the bank.
What wiring harness does the CJ1W-MD232 need?
An Omron XW2Z-series MIL-connector wiring harness, or any third-party equivalent wired to a 40-pin MIL plug on the module side. The harness is sold separately — the module ships without one.
Can I mix MD232 (PNP) and MD231 (NPN) on the same CJ rack?
Yes. The two modules are pin-compatible in the I/O address map and can sit on the same rack. Just be sure your field devices and PLC input scan match the polarity of each module — they are not interchangeable on the same wiring harness.
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