### Omron CQM1-AD042 Analog Input Module

The Omron CQM1-AD042 is a high-performance analog input module designed for use with the CQM1 programmable logic controller (PLC) series. It provides reliable and precise conversion of analog signals from field devices into digital values for processing by the PLC.

#### Input Signal Ranges

The module supports a wide variety of input signal types, making it versatile for different industrial applications:

●Voltage inputs:

  ●–10 to +10 V DC

  ●0 to 10 V DC

  ●1 to 5 V DC

●Current input:

  ●4 to 20 mA

These ranges allow the module to interface with standard sensors, transmitters, and other analog output devices commonly used in automation and process control.

#### Resolution

The CQM1-AD042 offers a resolution of 1/4000 (approximately 0.025% of full scale). This ensures high-precision conversion of analog signals, which is critical for applications requiring accurate measurement and control, such as temperature, pressure, flow, or level monitoring.

#### Conversion Speed

The module has a conversion speed of 2.5 ms per point (channel). This means that each analog input channel is updated every 2.5 milliseconds, providing fast response times suitable for dynamic processes and real-time control systems.

#### Key Features and Comparison with CQM1-AD041

The CQM1-AD042 shares the same performance characteristics as the CQM1-AD041, including the same input ranges, resolution, and conversion speed. However, the CQM1-AD042 does not require a separate power supply unit for its operation. This simplifies installation and reduces wiring requirements, as the module draws its power directly from the PLC backplane.

#### Typical Applications

●Monitoring and control of analog sensors and transmitters

●Process control in manufacturing, chemical, and water treatment industries

●Data acquisition for temperature, pressure, and flow signals

●Integration with SCADA or monitoring systems

#### Technical Specifications Summary

| Parameter | Specification |

|-------------------------|--------------------------------------|

| Input Types | Voltage (–10 to 10V, 0–10V, 1–5V) & Current (4–20 mA) |

| Resolution | 1/4000 (full scale) |

| Conversion Speed | 2.5 ms per channel |

| Power Supply | Not required (backplane powered) |

| Compatibility | CQM1 PLC series |

The CQM1-AD042 is a cost-effective and reliable solution for expanding the analog input capabilities of a CQM1 system, offering both flexibility and performance in a compact form factor.