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
Get technical data for the EMERSON KJ3002X1-BA1 analog module. Brand New, Original Stock, with Global Shipping options.
Emerson KJ3222X1-BK1 12P4705X032 SE4003S2B1 Analog Input Module
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 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.
Emerson KJ3222X1-BA1 12P2532X122 VE4003S2B3 Analog Input Module
The Emerson KJ3222X1-BA1 12P2532X122 is a high-performance DeltaV Analog Input Module. It features a VE4003S2B3 mass termination block for precise 4-20mA signal acquisition. This rugged M-series I/O module ensures real-time data accuracy and advanced diagnostics for DCS applications.
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.
Yokogawa AAI143-S50 S1 Analog Input Module
The Yokogawa AAI143-S50 S1 is an isolated 16-channel analog input module for the FIO system. It processes 4-20mA signals with ±0.1% accuracy for CENTUM VP control. This durable module features high-voltage isolation and integrated diagnostics for reliable industrial data acquisition.
Yokogawa SAI143-S33 Analog Input Module Centum VP
The Yokogawa SAI143-S33 is a 16-channel isolated analog input module for Centum VP DCS. It supports 4-20 mA signals from 2-wire and 4-wire transmitters, featuring a 40ms refresh rate and integrated transmitter power for high-precision industrial sensing.
Allen-Bradley 1797-IE8 FLEX Ex 8-Point Analog Input Module
The Allen-Bradley 1797-IE8 is an intrinsically safe 8-channel analog input module for the FLEX Ex I/O system. Featuring 16-bit resolution and 4-20mA support, it provides high-accuracy signal acquisition for hazardous Class I Division 1 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-S00 S1 Analog Input Module
The Yokogawa AAI143-S00 S1 is a 16-channel isolated analog input module designed for 4-20 mA signal acquisition in CENTUM VP systems. It features high-performance signal conditioning, 1500V AC isolation, and a hot-swappable design to ensure maximum reliability and uptime for critical industrial process control.
HIMA Z7127 HIQuad X Analog Input Module for Safety Systems
The HIMA Z7127 is a safety-certified analog input module designed for the HIQuad X system. It provides high-precision signal acquisition and integrated diagnostics for SIL 3 applications, ensuring reliable performance in demanding industrial environments and safety-critical protection loops.


























