Siemens SIMATIC S7-1500 Manual page 32

Connecting up
Block diagram
The following figure shows the block diagram of the CPU 1516T-3 PN/DP.
①
Display
②
RUN/STOP/MRES mode selector
③
Electronics
④
PROFINET 2-port switch
⑤
PROFIBUS DP driver
⑥
Backplane bus interface
⑦
Internal supply voltage
X50 SIMATIC memory card
X80 24 V DC Infeed of supply voltage
Figure 3-2 Block diagram of the CPU 1516T-3 PN/DP
32
PN X1 P1 R
PN X1 P2 R
PN X2 P1
PB X3
L+
M
R/S
ER
MT
X1 P1, X1 P2, X2 P1
PROFINET interface X1 Port 1
PROFINET interface X1 Port 2
PROFINET interface X2 Port 1
PROFIBUS interface X3
24 V DC supply voltage
Ground
RUN/STOP LED (yellow/green)
ERROR LED (red)
MAINT LED (yellow)
LED Link TX/RX
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Manual, 12/2017, A5E40898375-AA