6AG1321-1FH00-7AA0 - Siemens S7-300 I/O Modules
The Siemens 6AG1321-1FH00-7AA0 is a SIPLUS S7-300 SM321 digital input module with 16 AC inputs for industrial automation systems. This module integrates with Siemens Programmable Logic Controller platforms in the SIMATIC S7-300 IO module series, supporting 16 digital inputs, 120/230 V AC operation, -40 to +70 °C temperature range, electrical isolation via optocouplers, and conformal coating for harsh industrial environments.
| Brand | Siemens |
| Product Type | Programmable Logic Controller (PLC) |
| Product | 6AG1321-1FH00-7AA0 |
Siemens 6AG1321-1FH00-7AA0 S7-300 I/O Modules – Technical Specifications
| Specification | Value |
|---|---|
| Product Description | SIPLUS S7-300 SM321 16DI/120/230VAC based on 6ES7321-1FH00-0AA0 with conformal coating, -40…+70 °C, digital input isolated 16 DI, 120/230 V AC, 1x 20-pole |
| Product family | SIPLUS S7-300 SM 321 |
| Product Lifecycle (PLM) | PM400:Phase Out Started |
| Net Weight (kg) | 0,209 Kg |
| Packaging Dimension | 15,00 x 13,00 x 5,00 |
| Package size unit of measure | CM |
| Country of origin | Germany |
The 6AG1321-1FH00-7AA0 Siemens S7-300 I/O Modules component is a SIPLUS SM321 digital input unit for industrial automation systems. This module provides 16 AC digital inputs rated at 120/230 V AC, operates across a -40 to +70 °C temperature range, and includes conformal coating for environmental protection. It belongs to the SIMATIC S7-300 IO module family and supports stable signal acquisition in PLC-controlled installations.
In automation applications, the 6AG1321-1FH00-7AA0 Siemens S7-300 I/O Modules unit is used in conveyors, packaging lines, assembly systems, and plant automation panels. It enables reliable detection of AC signals from field devices such as switches and sensors while maintaining electrical separation between channels. The defined isolation structure and temperature tolerance support consistent operation in electrically noisy or environmentally demanding industrial locations.
The Siemens 6AG1321-1FH00-7AA0 digital input module delivers predictable performance with standardized AC input handling and defined mechanical dimensions. As part of the Siemens SIMATIC S7-300 platform, it aligns with established PLC architectures and long-term maintenance requirements. This Siemens S7-300 I/O Modules component remains suitable for engineers managing legacy or SIPLUS-based automation systems requiring durable and electrically isolated digital input expansion.
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