Connecting; Pin Assignment - Siemens S7-1200 System Manual

15.2

Connecting

15.2.1

Pin assignment

For details about pin assignment, see the "IO-Link Master signal module" technical
specification in Appendix A (Page 934).
The following table shows the terminal assignments for the SM 1278 4xIO-Link Master:
Pin X10
7 M
1
6 C/Q
1
5 L
1
4 RES
3
(functional earth)
2 M
1 L+
The following table contains illustrations of connection examples, where n = port number:
IO-Link operating mode
Note
Connected sensors must use the device supply provided by the Master module L
connection.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
X11 X12 X13
M M M
2 3 4
C/Q C/Q C/Q
2 3
L L L
2 3 4
RES RES RES
RES RES RES
RES RES RES
RES RES RES
Operating mode DI
Notes
M : ground to slave
•
n
C/Q : SDLC, DI or DQ
•
4
n
L : 24 VDC to slave
•
n
M: ground
•
L+: 24 VDC to Master
•
RES: reserved; may not be assigned
•
SM 1278 4xIO-Link Master
15.2 Connecting
BaseUnits
A1
Operating mode DQ
n
819