Siemens SIMATIC - Page 71

Digital modules
3.7 Digital input module SM 321; DI 32 x DC 24 V; (6ES7321-1BL00-0AA0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
71
Terminal assignment of SM 321; DI 32 x DC 24 V
The figure below shows how channels are assigned to addresses (input byte x up to input
byte x+3).
Technical specifications of SM 321; DI 32 x DC 24 V
Technical specifications
Dimensions and weight
Dimensions W x H x D (mm)
40 x 125 x 120
Weight
ca. 260 g
Module-specific data
Supports isochronous mode
No
Number of inputs
32
Cable length
• Unshielded
• Shielded
Max. 600 m
Max. 1000 m
Front connector 40-pin
Voltages, currents, potentials
Number of simultaneously controlled inputs
• Horizontal mounting position
to 40 °C
to 60 °C
• Vertical arrangement
to 40 °C
32
16
32
Electrical isolation
• between channels and the backplane bus
• Between channels
– in groups of
yes
Yes
16
Isolation test voltage
500 V DC