![Siemens SIMATIC PRO Extension Unit 12](http://html.mh-extra.com/html/siemens/simatic-pro-extension-unit-12-f-pn-advanced/simatic-pro-extension-unit-12-f-pn-advanced_operating-instructions-manual_1265372091.webp)
Technical specifications
6.5 Interface description
Extension Units KPxx
Operating Instructions, 05/2019, A5E43600360-AC
91
6.5.1
24 V DC power supply
Plug connector, 2-pin
Pin
Assignment
1
+24 VDC (L+)
2
GND (M)
6.5.2
Digital inputs/outputs
Contacts of the standard operator controls (X12)
Pin left connected to slot position
Pin right connected to slot position
1
L3 | R6
1
R6 | L3
2
L4 | R5
2
R5 | L4
3
L5 | R4
3
R4 | L5
4
L6 | R3
4
R3 | L6
5
R2
5
R2
6
R1
6
R1
7
L1
7
L1
8
L2
8
L2
The tables below show the contacts that can be switched depending on the switch position
of the operator control and based on the type of a standard operator control.