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Siemens Simatic S7 6ES7 321-7TH00-0AB0

### [Siemens 6ES7 321-7TH00-0AB0 SM321 Digital Input Module]()

*€914.00*

### [Siemens 6ES7 321-7EH00-0AB0 SM321 Digital Input]()

*€687.00*

The Siemens SIMATIC S7 module 6ES7 321-7TH00-0AB0 (SM 321) is a digital input module designed for S7-300 or PCS 7 automation systems. This module is used for capturing digital field signals and is particularly suited for industrial applications utilizing NAMUR sensors and 24 V signals. ([SI.SERV GmbH][1])

Featuring 16 digital inputs (DI) and an operating voltage of 24 V DC, the module ensures reliable processing of switching states from sensors, contacts, or actuators. Integrated diagnostic functions such as wire-break detection, debounce monitoring, and pulse extension allow for early identification and reporting of faults.
The module is equipped with a 40-pin connector and is intended for use in SIMATIC ET 200M or S7-300 systems. It can be utilized both in centralized control systems and decentralized peripheral structures via PROFIBUS or PROFINET. ([SI.SERV GmbH][1])

Technical Features:

* Type: Digital Input Module SM 321
* Article Number: 6ES7 321-7TH00-0AB0
* 16 Digital Inputs (DI)
* Input Voltage: 24 V DC
* Support for NAMUR Sensors
* Diagnostic Functions (Wire Break, Debounce Monitoring, Process Diagnostics)
* 40-pin Connector
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* For use in SIMATIC S7-300 / PCS7 / ET200M systems

Typical Fields of Application:

* Mechanical and Plant Engineering
* Process Automation
* Industrial Installations with Sensor and Switch Signals
* Integration into Siemens SIMATIC Automation Systems

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