SIEMENS SM 321 DIGITAL INPUT MODULE
The SM 321 Digital Input Module from the SIMATIC S7-300 series by Siemens offers 32 digital input channels, ensuring efficient data acquisition for automation systems. Designed for industrial reliability, it supports long cable runs, fast input response, and compact integration.
Manufacturer: SIEMENS
Type: Digital Input Module
Family: SIMATIC S7-300
Model: SM 321
MRN: 6ES7321-1BL00-0AA0
Serial No.: C-D1U78050
Ref No.: KCC-REM-S49-S7300
Technical Information
- Digital Inputs: 32
- Supply Voltage: 24 V DC
- Input Current From Backplane Bus 5 V DC: 15 mA
- Input Current For Signal œ1: 7 mA
- Input Delay: 1.2 ms / 4.8 ms
- Cable Length Shielded: 1000 m
- Connectable Encoders: 2-wire sensor
- Power Loss: 6.5 W
- Dimensions: 40 x 125 x 120 mm











