SIEMENS SM 321 DIGITAL INPUT MODULE
The Siemens SM 321 Digital Input Module is part of the SIMATIC S7-300 automation system, designed to deliver reliable digital input processing for a wide range of industrial control applications. Engineered for performance and durability, it offers seamless integration and robust data acquisition from field devices.
Manufacturer: SIEMENS
Family: SIMATIC S7-300
Type: Digital Input Module
Model: SM 321
MRN: 6ES7321-1BH02-0AA0
Technical Information
- Digital Inputs: 16
- Supply Voltage: 24 V DC
- Input Current from Backplane: 10 mA
- Input Current (Signal œ1): 7 mA
- Input Delay: 1.2 ms “ 4.8 ms
- Cable Length (Shielded): 1000 m
- Connectable Encoders: 2-wire sensor
- Power Loss: 3.5 W
- Isolation: 500 V DC
- Dimensions (W x H x D): 40 x 125 x 120 mm











