6AG1321-1BL00-2AA0 Siemens S7-300

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Siemens 6AG1321-1BL00-2AA0 SIPLUS S7-300 SM 321 digital input module, 32DI 24 V DC

Part Specifications

Manufacturer: Siemens Product Family: SIPLUS S7-300 SM 321 HS Code: 85389091 EAN: 4025515136163 SKU: 6AG1321-1BL00-2AA0 Country of Origin: DE Product Weight: 0.298 Packaging Height: 4.80 CM Packaging Length: 13.00 CM Packaging Width: 15.00 CM
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Full 12-month warranty

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Product description

6AG1321-1BL00-2AA0 Siemens SIPLUS S7-300 SM 321 Digital Input Module

The Siemens 6AG1321-1BL00-2AA0 is a SIPLUS S7-300 SM 321 40-pole digital input module. Siemens designed this to offer dependable signal acquisition in large-scale automation setups.

This SIPLUS variant is based on the proven 6ES7321-1BL00-0AA0. It has been specially hardened with a conformal coating. This coating provides protection against dust, condensation, and corrosive atmospheres.

It can withstand operating conditions ranging from –40 °C to +70 °C. This makes it suitable for deployment in environments where extreme climates or exposure could compromise standard electronic modules.

High-density input capability

The module is equipped with 32 separate digital inputs (DI). A wide range of field devices, including as sensors, switches, and monitoring equipment, can be reliably connected to its 24 V DC operation. This device features a 40-pole connector. It is ideal for applications that need space-efficient and high-capacity digital input expansion.

By consolidating multiple inputs into one module, engineers can reduce system complexity while maintaining reliable signal integrity.

Applications across industries:

The 6AG1 321-1BL00-2AA0 is a strong fit for industries including:

  • Manufacturing – monitoring conveyors, machine sensors, and automated systems
  • Utilities – tracking signals from pumps, valves, and field devices
  • Transport and logistics – integrating signals from safety switches and detection systems
  • Process industries – ensuring precise signal capture from a wide range of instrumentation

The robust build of this product makes it particularly valuable. It excels in sites where environmental stress, dust levels, or fluctuating temperatures pose a challenge.

Compact yet reliable design

The module has an expanded input capability. However, it remains lightweight at 0.298 kg and compact with dimensions of 13 cm in length and 4.8 cm in height. This design ensures efficient use of cabinet space. Thanks to the smooth integration with Siemens S7-300 systems, expanding the current control infrastructure is an easy task.

  • EAN: 4025515136163
  • Country of Origin: Germany
  • Commodity Code: 85389091
  • Category: Controllers, Distributed I/O Devices, I/O Extension Modules, Siemens Simatic S7

Prepare for end of lifecycle

Important Notice: The Siemens 6AG1321-1BL00-2AA0 will be discontinued on 1st October 2025. Secure sufficient spare units in advance to maintain ongoing system availability.

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