Siemens SIMATIC ET 200X 6ES7144-1GB31-0XB0 EM 144 AI 2 Analog Input Module

Overview

Siemens · SIMATIC ET 200X

6ES7144-1GB31-0XB0 EM 144 AI 2 ±20 mA Analog Input Module

Siemens 6ES7144-1GB31-0XB0 is the SIMATIC ET 200X EM 144 analog input module with two ±20 mA current channels, 12-bit-plus-sign resolution, diagnostics, limit monitoring and hardware interrupts.

At a Glance

Brand	Siemens
Model	6ES7144-1GB31-0XB0
Product Type	Rugged two-channel analog current input module
Core Function	Measures two bipolar current signals in an ET 200X field station
Application or Compatible Series	SIMATIC ET 200X analog measurement systems

Signal Range

Match both channels to the configured ±20 mA current range.

Shielding

Retain the documented shield connection and maximum cable length.

Alarm Parameters

Restore channel limits, diagnostics and hardware-interrupt settings.

Product Overview

Siemens 6ES7144-1GB31-0XB0 is the SIMATIC ET 200X EM 144 analog input module with two ±20 mA current channels, 12-bit-plus-sign resolution, diagnostics, limit monitoring and hardware interrupts.

Acquires two independent ±20 mA analog process signals. Detects configured short circuit, wire break, overflow and underflow conditions. Generates channel alarms for configured measurement limits and events.

Ordering focus: confirm the GB31 current-input version, two ±20 mA channels, four-wire transmitters, shield termination, cable length, limits and alarm parameters.

Key Functions

Two Bipolar Current Inputs

Acquires two independent ±20 mA analog process signals.

Diagnostic Monitoring

Detects configured short circuit, wire break, overflow and underflow conditions.

Limit and Hardware Alarms

Generates channel alarms for configured measurement limits and events.

Official Specifications

Analog Input Channels	2
Input Signal Range	±20 mA
Input Resistance	25 Ω
Transmitter Connection	Four-wire transmitter
Conversion Resolution	12 bits plus sign
Overrange	17.5%
Integration Time	16.7 or 20 ms
Interference Suppression	50 or 60 Hz
Shielded Cable Length	Maximum 30 m
Operational Error Limit	1.2%
Channel Isolation	Inputs not galvanically isolated from each other
Diagnostics	Short circuit, wire break, overflow and underflow
Limit Monitoring	Configurable
Hardware Interrupt	Configurable
Status Indication	Red SF group-error LED

Official source:Siemens official technical data for 6ES7144-1GB31-0XB0.

Frequently Asked Questions

Which current signals can I connect to 6ES7144-1GB31-0XB0?

Use two compatible bipolar current signals within the configured ±20 mA range.

What resolution does 6ES7144-1GB31-0XB0 provide?

The converter resolves the measured value with 12 bits plus sign.

How long may the field cable be for 6ES7144-1GB31-0XB0?

Use shielded analog cable no longer than 30 m.

Can 6ES7144-1GB31-0XB0 report a broken signal wire?

The module supports wire-break and short-circuit diagnostics for the configured channel.

How do I reduce mains-frequency interference on 6ES7144-1GB31-0XB0?

Set the integration and interference-suppression parameters for the applicable 50 or 60 Hz environment.

What should I save before replacing 6ES7144-1GB31-0XB0?

Record the channel ranges, limit values, alarm settings, cable shields and terminal assignments.

What should I verify after installing 6ES7144-1GB31-0XB0?

Check both measured currents, scaling, diagnostics, limit alarms and the SF indicator.

Compatibility & Ordering Notes

Before ordering 6ES7144-1GB31-0XB0: confirm the GB31 current-input version, two ±20 mA channels, four-wire transmitters, shield termination, cable length, limits and alarm parameters.

Compatibility Checklist

• Use only in an approved SIMATIC ET 200X station configuration.
• Maintain the specified shielded-cable routing and 30 m maximum length.
• Restore every channel range, limit and diagnostic parameter before process operation.

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