Siemens 6ES7321-7BH01-0AB0 Digital Input Module
The Siemens 6ES7-321-7BH01-0AB0 SM 321 module offers 16 isolated 24 V DC digital inputs with diagnostics and isochronous support, making it ideal for reliable and time-sensitive automation systems. Built to seamlessly integrate with SIMATIC S7-300 racks, it ensures dependable performance for diverse industrial applications.
Technical Specifications
Model: 6ES7321-7BH01-0AB0 Siemens
Series: SIMATIC S7-300
Module Type: SM 321 Digital Input
Input Channels: 16 DI
Signal Type: 24 V DC
Input Isolation: Yes
Connector Type: 1 × 20-pole
Diagnostics: Supported
Process Interrupts: Yes
Isochronous Mode: Supported
Mounting Type: Standard S7-300 rail mounting
Lifecycle Status: Product phase-out announced (since 01.10.2023)
Replacement: Not specified
Function & Application
- Purpose: Digital input module for acquiring 24 V DC signals in SIMATIC S7-300 control systems.
- Typical Applications:
- Acquisition of sensor signals and binary input devices.
- Use in time-critical control applications with isochronous support.
- Signal diagnostics and process interrupt triggering in automation systems.
Performance & Features
- 16 Isolated Digital Inputs. Supports fast and reliable signal acquisition.
- Integrated Diagnostics. Facilitates troubleshooting and error localization.
- Supports Isochronous Operation. Ideal for time-critical automation processes.
- Process Interrupt Capable. Enables fast response to input events.
- Standard S7-300 Integration. Seamlessly integrates with existing rack assemblies.
Recommended Accessories
- 6ES7392-1AJ00-0AA0 – Front Connector (Screw Contact, 20-Pole)
- 6ES7392-1BJ00-0AA0 – Front Connector (Spring Contact, 20-Pole)
Delivery & Compliance
- Packaging Dimensions: 12.80 × 15.20 × 5.20 cm
- Net Weight: 0.248 kg
- Packaging Quantity: 1 Piece
- Country of Origin: Germany
- Estimated Dispatch Time: 1 Working Day
Product Compliance & Classification
- RoHS Compliance: Since 31.03.2008
- WEEE Take-Back Obligation: Yes
- SCIP Number: b363d6d0-a3e9-4158-aa79-3247370d35f3
- REACH Substances:
- Lead (CAS 7439-92-1) > 0.1%
- Lead monoxide (CAS 1317-36-8) > 0.1%
- Commodity Code: 85389099
- Catalog ID: ST73
- Product Group: 2288
- Group Code: R151
- Product Class: A – Stock item, returnable
- EAN: 4025515069379
- UPC: 040892560701
Key Features & Benefits:
✅ 16 DI Channels. Input support for 24 V DC binary devices.
✅ Input Isolation. Electrical separation improves signal integrity.
✅ Process Interrupt Support. Enables responsive control strategies.
✅ Diagnostic Capabilities. Assists with rapid troubleshooting.
✅ Compatible with Isochronous Mode. Suited for real-time applications.
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