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Part of the Omron CP-Series Compact PLCs series — see the full model table, lifecycle status and replacement parts.

Omron CP1W-DA021 — angled top view of the black plastic CP1W Special I/O module on a grey surface showing the side-mounted CAUTION label with bilingual (English / Japanese) wiring instructions, the dark plastic housing, and the small expansion connector visible at the bottom

Omron CP1W-DA021 — CP1W 2 Ch Analog

SKU: CP1W-DA021

USD 98.00

CP1W 2-channel analog output for CP1L/CP1H/CP1E. -10 to +10 V or 4-20 mA per channel. 1/4000 resolution, 1 ms per point.

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Product Overview

The Omron CP1W-DA021 adds two analog outputs to a CP1L, CP1H, or CP1E PLC. 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.

12-bit (1/4000) D/A resolution per channel 100 mA at 5 VDC from the CP1W expansion connector D/A conversion in 1 ms or less per point (about 5 ms per unit) Approvals: CE / cULus / KC (KCC-REM-OMR-CP1W-0013) -- Made by OMRON Corporation

Key specs: Model CP1W-DA021; Output Channels 2 channels (CIO 2 / CIO 3); Output Ranges (Voltage) 1 to 5 V / 0 to 5 V / 0 to 10 V / -10 to +10 V (per-channel selectable); Output Ranges (Current) 4 to 20 mA (current sink), per-channel selectable; Resolution 12-bit (1/4000) per channel; Conversion Time 1 ms or less per point (about 5 ms per unit cycle); Accuracy Plus or minus 0.3 percent FS (voltage) / Plus or minus 0.5 percent FS (current); Output Hold Per-channel hold of last value on CPU error / run-stop transition.

Key Features

  • 12-bit (1/4000) D/A resolution per channel
  • 100 mA at 5 VDC from the CP1W expansion connector
  • D/A conversion in 1 ms or less per point (about 5 ms per unit)
  • Approvals: CE / cULus / KC (KCC-REM-OMR-CP1W-0013) -- Made by OMRON Corporation
  • SKU: CP1W-DA021
  • Series: CP1W-series Special I/O Analog Output Unit
  • Voltage: 1 TO 5 V

Best-Fit Applications

  • Pair with a CP1W-AD041 analog input for closed-loop position / pressure setpoint control
  • Two-loop PID output on a CP1H-XA with built-in analog I/O plus a DA021 expansion channel
  • Test bench command signals to a third-party controller using a CP1L as the signal source

Buying Checklist

  • Pick the CJ1W-DA041 instead for a CJ-series 4-channel analog output (mixed with the CJ1W rack)
  • Pick the CP1W-MAD44 (4-in + 4-out analog) when the cabinet also needs 4 analog inputs alongside the outputs
  • Pick the CP1W-DA021 when the CP1L / CP1H / CP1E needs 2 analog output channels without a 4-channel card

Technical Specifications

Series CP1W-series Special I/O Analog Output Unit
Model CP1W-DA021
Output Channels 2 channels (CIO 2 / CIO 3)
Output Ranges (Voltage) 1 to 5 V / 0 to 5 V / 0 to 10 V / -10 to +10 V (per-channel selectable)
Output Ranges (Current) 4 to 20 mA (current sink), per-channel selectable
Resolution 12-bit (1/4000) per channel
Conversion Time 1 ms or less per point (about 5 ms per unit cycle)
Accuracy Plus or minus 0.3 percent FS (voltage) / Plus or minus 0.5 percent FS (current)
Output Hold Per-channel hold of last value on CPU error / run-stop transition
Connection Removable screw terminal block, M3.5, 0.5 Nm torque
Current Draw 100 mA at 5 VDC from CP1W backplane
Configuration CX-Programmer PLC Setup -- range and scaling per channel

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 CP1W-DA021

Does the CP1W-DA021 support both voltage and current output?
Yes, per channel independently. Each of the two channels (CIO 2 / CIO 3) can be set to 1-5 V, 0-5 V, 0-10 V, -10 to +10 V, or 4-20 mA via CX-Programmer PLC Setup. The field wiring follows the chosen range: VOUT1 / VOUT2 are the output pins, COM1 / COM2 are the commons for current-loop loops. Mixing one channel as voltage and the other as current on the same DA021 is allowed.
What resolution does the CP1W-DA021 give?
12-bit (1/4000) for both voltage and current outputs. At 0-10 V this is about 2.5 mV per step; at 4-20 mA this is about 4 uA per step. For higher resolution (up to 1/6000 or 1/16000), use the CJ1W-DA042V or NX-DA2603 / NX-DA3603 instead.
Can I add a CP1W-DA021 to a CP1L-EM30DT-D CPU?
Yes. Drop the DA021 to the right of the CPU or to the right of a CP1W-8E[] / 20ED[R/D/T] expansion unit. The 16-pin flat expansion cable carries the 5 VDC backplane and the analog signal bus. The CP1L-EM30DT-D supports up to three CP1W expansion units, so the DA021 plus one or two more (for example a CP1W-8ET + CP1W-AD041) all sit in the same chain.
Does the CP1W-DA021 hold its last value when the CPU stops?
Yes, if output hold is enabled in CX-Programmer PLC Setup (the H9 / H10 setting). On CPU error or RUN-to-STOP transition, the DA021 latches the last commanded value on each output. Disable output hold if you want the output to drop to 0 V / 0 mA on CPU stop (for fail-safe shutdown of a downstream valve or drive).

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