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Home Product 6ES7321-7BH01-0AB0 SM321 DI16 Digital Input Module 24VDC Siemens S7-300 PLC System
6ES7321-7BH01-0AB0

6ES7321-7BH01-0AB0 SM321 DI16 Digital Input Module 24VDC Siemens S7-300 PLC System

6ES7321-7BH01-0AB0
Siemens S7-300 DI Module
32-Channel PLC Input
6ES7321-7BH01-0AB0
Siemens 6ES7321-7BH01-0AB0 S7-300 DI Module, 32-Channel digital input for PLC control systems. High-density industrial automation solution with reliable signal processing and S7-300 series compatibility.
Categories:Automation
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Product Description

The Siemens 6ES7321-7BH01-0AB0 is a 32-channel digital input (DI) module for the S7-300 PLC series, offering high-density integration for industrial automation. This module supports 32 DC inputs (24V) with electrical isolation, designed to interface directly with sensors and switches in harsh environments. Compatible with S7-300 racks via backplane bus, it requires a nominal voltage of 24V DC (operating range 20.4–28.8V DC) and operates at -25°C to +60°C. Featuring LED status indicators for diagnostics, it enables rapid signal processing and is ideal for manufacturing, process control, and logistics systems. Advantages include high reliability and compact design, though users must ensure proper power supply and signal conditioning. The module lacks built-in communication ports, relying on the PLC’s CPU for data exchange. Not applicable for battery or display features, it focuses on robust input handling with a short-circuit-proof design. Typical applications include machine control, conveyor systems, and safety interlocking. Its narrow form factor saves panel space but requires careful installation to avoid wiring congestion. Detection distances depend on connected sensors, typically aligning with industrial proximity switch specifications.
Parameter Specification
Module Type Siemens S7-300 DI Module (6ES7321-7BH01-0AB0)
Input Channels 32-Channel PLC Input (Grouped in 16 x 2)
Input Voltage (Nominal) 24 VDC (Sink/Source Configurable)
Input Current (Per Channel) 7 mA at 24 VDC
Permissible Voltage Range 20 VDC to 30 VDC
Electrical Isolation 500 VAC between channels and backplane bus
Diagnostics Module-specific hardware interrupt capabilities
Power Consumption 1.3 W (Typical from backplane)
Connection Method Screw-type terminal or spring contact via front connector
Response Time 0.1 ms to 20 ms (Configurable via software)
Certifications CE, UL, ATEX, IECEx, cULus
Operating Temperature -20°C to +60°C
Module Dimensions (W x H x D) 40 mm x 125 mm x 120 mm
question:Do you accept payment after shipment?
answer:We require prepayment or secure payment methods like L/C for all orders to ensure secure transactions.
question:What payment methods do you accept?
answer:We support TT, PayPal, L/C, and other mainstream payment options for flexible and secure transactions.
question:Why is shipping cost high? Are there cheaper options?
answer:Costs depend on carrier and weight. We offer economical options like sea freight and may negotiate rates based on destination.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Do you accept payment after shipment?
answer:We require prepayment or secure payment methods like L/C for all orders to ensure secure transactions.
question:What payment methods do you accept?
answer:We support TT, PayPal, L/C, and other mainstream payment options for flexible and secure transactions.
question:Why is shipping cost high? Are there cheaper options?
answer:Costs depend on carrier and weight. We offer economical options like sea freight and may negotiate rates based on destination.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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