You are here:
- Home
- Product
- I/O Modules
- Analog Input Modules
- Siemens 6ES7231-0HC22-0XA8 Analog Input Module
SKU: 6ES7231-0HC22-0XA8
Siemens 6ES7231-0HC22-0XA8 Analog Input Module
The Siemens 6ES7231-0HC22-0XA8 is a 4-channel analog input expansion for S7-200 CN PLCs. It features 12-bit resolution and a 0-10V DC range, providing precise signal acquisition in a compact 0.18kg module.
The Siemens 6ES7231-0HC22-0XA8 is a high-precision expansion module for the SIMATIC S7-200 CN PLC series. This module specifically expands the analog processing capabilities of S7-22X CN central processing units. It allows engineers to integrate four independent analog signals into their control logic. Because this variant serves the CN market, it offers full compatibility with regional S7-200 configurations. The hardware ensures reliable signal conversion for various industrial monitoring tasks.
Technical Specifications
| Parameter | Specification Details |
| Brand | Siemens |
| Model Number | 6ES7231-0HC22-0XA8 (EM 231) |
| Input Channels | 4 Analog Inputs |
| Input Range | 0 to 10V DC (Voltage) |
| Resolution | 12-Bit Analog-to-Digital Converter |
| Power Consumption | 2.0 Watts |
| Weight | 0.18 kg |
| Dimensions | 4.5 x 7.5 x 10.0 cm |
| Compatibility | S7-22X CN CPUs only |
Primary Functional Characteristics
The EM 231 module utilizes differential inputs to minimize external electromagnetic interference. This design choice significantly improves the accuracy of measurements in noisy factory environments. Furthermore, the 12-bit resolution provides a high degree of granularity for sensitive data. The module communicates directly with the PLC backplane for instantaneous data updates. Its compact housing saves valuable space on the DIN rail. Additionally, the unit features built-in isolation to protect the main CPU from field-side surges.
Industrial Applications
- Monitoring industrial temperature sensors via voltage transducers.
- Tracking pressure levels in hydraulic and pneumatic systems.
- Measuring fluid flow rates in water treatment facilities.
- Interfacing with variable frequency drives for speed feedback.
Tags: Analog Input Module
You may also like
The Emerson KJ3222X1-BK1 is an 8-channel DeltaV analog input module. It provides 24-bit resolution for 4-20mA signals in M-series I/O subsystems.
Emerson 1C31223G01 Analog Input Module
The Emerson 1C31223G01 is an 8-channel analog input module for Ovation DCS. It provides high-precision measurement for 4-20mA and voltage signals. This 0.32kg module features advanced diagnostics and rugged isolation for critical industrial monitoring.
General Electric IS210WETAH1A Analog Input Module
The GE IS210WETAH1A is a high-performance Analog Input Module designed for Mark VIe DCS environments. It features a 100 MHz 486 processor, 8 MB of DRAM, and integrated Ethernet connectivity for precise industrial turbine control and monitoring.
Emerson 5X00070G04 Analog Input Module
The Emerson 5X00070G04 is a 14-bit, 8-channel analog input module designed for the Ovation Distributed Control System. It provides high-precision signal processing for low-level industrial inputs in power and process manufacturing environments.
Allen-Bradley 1756-IT6I2 ControlLogix Analog Input Module
The Allen-Bradley 1756-IT6I2 is a 6-channel isolated thermocouple input module for ControlLogix systems. It features 16-bit resolution, support for 11 thermocouple types, and dual CJC inputs for precise industrial temperature measurement and monitoring.
ICS Triplex T9432 Analog Input Module
The ICS Triplex T9432 is a 16-channel isolated analog input module for the AADvance system. It supports 0-24mA signals with advanced line monitoring and diagnostic capabilities for safety-critical industrial automation.
Triconex AI3351 Analog Input Module
The Triconex AI3351 is a high-reliability TMR Analog Input module for SIL 3 safety applications. Supporting 4-20mA and 0-10V signals, it features triple-redundant processing and extensive diagnostics to ensure maximum data integrity in critical process environments.
Emerson DeltaV KJ3221X1-BA1 VE4035S2B1 Analog Input Module 12P2531X102
The Emerson KJ3221X1-BA1 (VE4035S2B1) is an 8-channel, 4-20 mA Analog Input Module designed for the DeltaVâ„¢ M-series DCS. This 12P2531X102 module provides high-accuracy data acquisition, integrated diagnostics, and Series 2 redundancy support to ensure stable process automation in rigorous industrial environments.
Triconex AI3281 Analog Input Module for TMR Safety Systems
The Triconex AI3281 is a 32-point TMR analog input module designed for 4-20mA signal acquisition in safety-critical DCS environments. This SIL 3 certified module provides high-accuracy data processing and fault-tolerant operation for demanding oil, gas, and power applications
Yokogawa SAI143-S53 Analog Input Module
The Yokogawa SAI143-S53 is a 16-channel, isolated analog input module designed for 4-20 mA signals. Built for high-integrity safety systems, it supports dual-redundancy and HART communication, providing exceptional accuracy and diagnostic capabilities for SIL 3 safety-instrumented applications.
Yokogawa AAI143-S53 S1 Analog Input Module
The Yokogawa AAI143-S53 S1 is a 16-channel, isolated 4-20 mA analog input module for CENTUM VP/CS 3000 systems. Featuring 1500V isolation, G3 conformal coating, and dual-redundancy support, it provides high-precision signal conversion and reliable monitoring for critical industrial process control.
Emerson DeltaV KJ3222X1-BA1 12P2532X072 Analog Input Module
The Emerson KJ3222X1-BA1 (12P2532X072) is an 8-channel analog input module for the DeltaV M-series DCS. Featuring 16-bit resolution, integrated loop diagnostics, and hot-swap capability, this module delivers high-precision signal acquisition and reliable fault detection for critical industrial automation processes.


























