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• • • • • • • • • • • • • • • SIEMENS 6ES7321-1BL00-0AA0 SIMATIC S7 Digital Input Module

                              Product Overview

                              Brand: Siemens
                              Model: 6ES7321-1BL00-0AA0
                              Product Type: Digital Input Module
                              Series: SIMATIC S7-300 / SM 321
                              Application: PLC Control Systems, Industrial Automation

                              The SIEMENS 6ES7321-1BL00-0AA0 is an SM 321 digital input module for the SIMATIC S7-300 PLC system. It provides 32 isolated digital input channels (24 V DC) for collecting signals from field devices such as sensors, switches, and proximity detectors.

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                              Technical Specifications

                              Parameter	Specification
                              Brand	Siemens
                              Model	6ES7321-1BL00-0AA0
                              Series	SIMATIC S7-300
                              Module Type	SM 321 Digital Input Module
                              Number of Inputs	32 Digital Inputs
                              Input Voltage	24 V DC
                              Input Type	DC Digital Input
                              Isolation	Galvanically isolated
                              Input Groups	Isolated in groups of 16
                              Connection	1 × 40-pin front connector
                              Input Characteristic	IEC 61131 Type 1
                              Input Signal "1"	13…30 V DC
                              Input Signal "0"	-30…+5 V DC
                              Input Current	Approx. 7 mA per input
                              Backplane Current	Max. 15 mA
                              Power Loss	Approx. 6.5 W
                              Mounting	S7-300 Rack Installation
                              Protection Rating	IP20

                               

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                              Main Features

                              • 32-channel 24 V DC digital input design
                              • Electrical isolation between input groups and backplane bus
                              • Supports connection of switches and proximity sensors
                              • LED indicators for input status monitoring
                              • Reliable signal acquisition for PLC control applications
                              • Compact S7-300 modular design
                              • Easy integration with STEP 7 engineering software

                               

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                              Applications

                              • Siemens SIMATIC S7-300 PLC systems
                              • Factory automation equipment
                              • Machine control systems
                              • Production lines
                              • Sensor signal monitoring
                              • Industrial process control 

.The structure and details of the product：

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