Siemens Sinumerik 802D sl Instruction Manual page 27

4.1.8 Digital inputs/digital outputs
Various sensors and actuators can be connected to the connectors X20 and X21 via digital
inputs/digital outputs.
Max. 16 or 8 digital inputs and 8 digital outputs can be used.
Wiring diagram and block diagram
24 V DC ext. power supply
P24
M
Grounding
Fig. 4-1 Connection example
Siemens Automation Parts
SINUMERIK 802D sl Instruction Manual (BA), 05/2005 Edition
6FC5 397-0CP10-1BA0
4.1
X40
P24
+ 24 V
1
M
M
2
PE
3 PE
X20
DI0
1
2 DI1
3
DI2
DI3
4
5 M3
P24_1
6
DI/DO0
7
DI/DO1
8
9 M_1
10
DI/DO2
11
DI/DO3
12 M_1
X21
DI4
1
DI5
2
3 DI6
DI7
4
M_4
5
P24_2
6
7
DI/DO4
DI/DO5
8
M_2
9
DI/DO6
10
DI/DO7
11
M_2
12
CNC operator panel (PCU) interfaces
P24
M
X1 X2
PROFIBUS
X6
CNC operator
panel (PCU)
Interfaces
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