| Product Type | S7-300 Digital Extension |
| Product Model | 6ES7321-1BH02-0AA0 |
| Show off | Screen Alignment [cm] 6.1 cm |
| Product Dimensions | 70 MM × 147 MM × 129 MM |
| Power Supply Voltage | Rated value (DC) 24 V Allowable range, lower limit (DC) 19.2 V Allowable range, upper limit (DC) 28.8 V Reverse polarity protection is |
| Weight | 456 g |
High-Performance CPU in S7-1500 Series: Model CPU 1515F-2 PN, a mid-to-high-end controller in the SIMATIC S7-1500 family—supports both standard control and Fail-Safe (F) functionality, ideal for safety-critical applications such as emergency stops, safety doors, and light curtains.
Dual PROFINET Interface Design: Features 2 integrated PROFINET ports with built-in switch functionality, enabling linear, star, or ring network topologies without external switches—simplifying device-level networking and IO controller communication.
Flexible Expandability: Supports up to 8 signal modules (SM) or signal boards (SB), allowing flexible integration of digital, analog, communication, and technology modules for complex automation systems.
Integrated Web Server: Enables access to custom web pages via standard browsers for device monitoring, alarm display, or remote diagnostics—enhancing operational and maintenance efficiency.
MicroSD Card Slot: Supports program backup, firmware updates, recipe storage, and boot from card—facilitating maintenance, system recovery, and migration.
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