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Siemens SIMATIC S7/PCS 7 SM 321 16-Channel Digital Input Module

Siemens SIMATIC S7/PCS 7 SM 321 Digital Input Module, 16 DI.

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ManufacturerSiemens

Part number6ES7321-7EH00-0AB0

Number of digital inputs 16

Input Voltage 24/125 V DC

Diagnostics Wire break, hardware interrupt

Connection 40-pole

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12-month warranty

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

16 Digital Inputs Flexible DC Voltage Input (24-125V) Wire Break Diagnostics Hardware Interrupt Diagnostics SIMATIC S7/PCS 7 Compatibility

Product description

The Siemens 6ES7321-7EH00-0AB0 is a SIMATIC S7/PCS 7 SM 321 digital input module offering 16 channels for 24/125V DC signals. It includes advanced features like wire break diagnostics and hardware interrupt diagnostics, enhancing system monitoring and reliability. This module is designed for robust performance in demanding industrial environments.

This module is well-suited for applications requiring flexible voltage input and detailed diagnostic capabilities. It finds use in process automation, industrial control, and monitoring systems across various sectors, including chemical, oil and gas, and power generation.

Stanlo Automation, a veteran-owned surplus parts distributor, offers this Siemens module. We provide reliable components and efficient service to meet your industrial automation needs. Partner with us for quality surplus parts and dedicated support.

Technical specifications

Number of digital inputs	16
Input Voltage	24/125 V DC
Diagnostics	Wire break, hardware interrupt
Connection	40-pole

Common applications

Process Automation

Industrial Control

Monitoring Systems

Chemical Industry

Oil & Gas

Power Generation

Compatible systems

SIMATIC S7, SIMATIC PCS 7

Also known as

Siemens SM 321 Input Module S7/PCS 7 Digital Input 6ES7 321-7EH00-0AB0

Replaces / compatible with

Direct replacement for Siemens SIMATIC S7/PCS 7 systems requiring 16-channel digital input with advanced diagnostics.

Technical note

Expert tip

The dual voltage range (24-125V DC) requires careful consideration during wiring to ensure correct input signal interpretation and prevent damage.

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Frequently asked questions

What types of diagnostics does the Siemens 6ES7321-7EH00-0AB0 offer?

This module provides both wire break diagnostics, which detects open circuits in connected lines, and hardware interrupt diagnostics, allowing for immediate system response to critical input changes.