Siemens Simatic S7-300 - Digital Input Module SM; DI 8 X 120;230 VAC ISOL (6 ES7321-1 FF10-0 AA0); Module View and Block Diagram of the SM 321; DI 8 X 120;230 VAC ISOL

Digital Modules
3-44
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
3.15 Digital Input Module SM 321;
DI 8 x 120/230 VAC ISOL (6ES7321-1FF10-0AA0)
Order number
6ES7321-1FF10-0AA0
Characteristics
The digital input module SM 321; DI 8 x 120/230 VAC ISOL has the following
distinguishing characteristics:
• 8 outputs, isolated in groups of 1
• 120/230 VAC rated input voltage
• Suitable for switches and two / three / four-wire AC proximity switches
Terminal assignment and block diagram of the SM 321; DI 8 x 120/230 VAC ISOL
M
M
Backplane bus
interface
1
4
7
10
11
14
17
20
21
24
27
30
31
34
37
40
Channel
number
Status display – green
M
Figure 3-15 Module View and Block Diagram of the SM 321; DI 8 x 120/230 VAC ISOL