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Siemens SIMATIC S7-300 SM 321 16-Channel Digital Input Module

Siemens SIMATIC S7-300 SM 321 Digital Input Module with 16 DI.

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ManufacturerSiemens

Part number6ES7321-7BH01-0AB0

Number of digital inputs 16

Supply Voltage 24 V DC

Input characteristic Type 2

Signal '0' voltage -30 to +5 V

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12-month warranty

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Veteran-owned

CAGE: 9NK75

16 Digital Inputs 24V DC Operation Isochronous Mode Support Diagnostics Capable Optical Isolation Hardware Interrupts

Product description

The Siemens 6ES7321-7BH01-0AB0 is a SIMATIC S7-300 SM321 Digital Input Module with 16 digital inputs operating at 24 volts DC. It features hardware and diagnostics interrupts for enhanced functionality and monitoring, and supports Isochronous Mode for synchronized operation. This module provides optical isolation for improved safety and reliability.

This module is ideal for various industrial automation applications where reliable digital input is crucial. It integrates seamlessly with the SIMATIC S7-300 system and is suitable for process control, data acquisition, and machine automation in industries such as manufacturing, automotive, and material handling.

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Technical specifications

Number of digital inputs	16
Supply Voltage	24 V DC
Input characteristic	Type 2
Signal '0' voltage	-30 to +5 V
Signal '1' voltage	13 to 30 V
Signal '1' current	7 mA
Isolation checked with	500 V DC
Connection	20-pole

Common applications

Manufacturing Automation

Process Control

Automotive Industry

Material Handling

PLC Systems

Machine Control

Compatible systems

SIMATIC S7-300 PLC Series

Also known as

Siemens SM 321 Module S7-300 Digital Input 6ES7 321-7BH01-0AB0

Replaces / compatible with

Compatible with Siemens SIMATIC S7-300 series automation systems.

Technical note

Expert tip

Ensure proper grounding and wiring according to the S7-300 system manual to maintain signal integrity and safety.

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Frequently asked questions

What are the key specifications of the Siemens 6ES7321-7BH01-0AB0?

The Siemens 6ES7321-7BH01-0AB0 features 16 digital inputs operating at 24V DC. It supports Isochronous Mode, diagnostics, and provides optical isolation. It uses a 20-pin connection.