CJ1W-MAD42 Analog I/O Unit 4 Inputs 2 Outputs 1/8000 | Omron

The Original New Omron CJ1W-MAD42 is a Special I/O Unit for the SYSMAC CJ series programmable logic controller (PLC) platform, combining 4 analog input channels and 2 analog output channels in a single module. It accepts voltage (±10 V, 0–10 V, 0–5 V, 1–5 V) and current (4–20 mA) signals, and outputs the same signal ranges with high precision. Featuring selectable resolution of 1/4000 (scalable to ±32000) or 1/8000, this module delivers accurate analog signal conversion for process control, machine automation, and data acquisition applications. Part of the CJ-series Special I/O Unit family, it is fully compatible with CJ1, CJ2, and NJ series CPU units. The module includes offset/gain adjustment, mean value processing, and peak value hold functions for flexible analog signal management.

Core Engineering Highlights:
4 analog inputs + 2 analog outputs | Voltage and current input/output ranges | Selectable resolution: 1/4000 (scalable to ±32000) or 1/8000 | 1 ms / 500 µs A/D conversion period | 16‑bit binary output data | D/A conversion output data: 12‑bit | Photocoupler isolation between I/O and controller signals | 580 mA max current consumption at 5 V DC | 18‑point detachable screw terminal block | 31 × 90 × 65 mm | 150 g max weight | 0°C to +55°C operating temperature

Key Features:

• Original New Omron CJ1W-MAD42 module

• 4 analog input channels, individually configurable for voltage or current signals

• Input ranges: 1–5 V, 0–5 V, 0–10 V, –10 to 10 V, 4–20 mA

• 2 analog output channels, configurable for voltage or current signals

• Output ranges: 1–5 V, 0–5 V, 0–10 V, –10 to 10 V, 4–20 mA

• Selectable resolution: 1/4000 (scalable to ±32000) or 1/8000

• 16‑bit binary A/D conversion output data

• D/A conversion output data: 12‑bit

• A/D conversion period: 1 ms / 500 µs per input point

• Overall accuracy: ±0.2% of F.S. (voltage) / ±0.4% of F.S. (current) at 23±2°C

• Mean value processing with buffer sizes: n = 2, 4, 8, 16, 32, 64

• Peak value hold for capturing maximum conversion values

• Offset/gain adjustment for calibration

• Input disconnection detection for 1–5 V and 4–20 mA ranges

• Photocoupler isolation between I/O signals and PLC

• 18‑point detachable screw terminal block (M3 screws)

• DIN rail mounting for control cabinet installation

• 150 g max. weight

Applications:

• Process variable monitoring and control (pressure, flow, level, temperature)

• Analog signal acquisition from 4–20 mA transmitters and voltage sensors

• Speed reference control for variable frequency drives and servo drives

• Valve positioning and actuator control

• Machine automation and data acquisition systems

• Factory automation and process control

• OEM equipment requiring combined analog I/O expansion

Technical Specifications:

System Compatibility:

• Compatible with Omron SYSMAC CJ1, CJ2, and NJ series CPU units

• Mounts on CPU rack or expansion rack of CJ series

• Maximum 7 modules on CPU system, 8 modules on expansion system

• Uses CJ-series I/O bus

• Programming software: CX-Programmer (CX-One) / Sysmac Studio

• Replacement for discontinued CQM1H-MAB42

Related Products:

• CJ1W-AD081-V1 – 8-channel analog input unit (inputs only)

• CJ1W-DA041 – 4-channel analog output unit (outputs only)

• CJ1W-DA08V – 8-channel analog output unit (voltage)

• CJ1W-MAD42 – 4 inputs / 2 outputs (current model)

• CJ1W-PA205R – Power supply unit, 100-240 V AC, 25 W

• CJ1W-BC103 – 3-slot CPU rack

• CJ1W-ID211 – 16-point DC input unit

• CJ1W-OD212 – 16-point PNP transistor output unit

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron and SYSMAC are trademarks of Omron Corporation.