Siemens SIMATIC S7-1500 Equipment Manual page 33

Block diagram
The figure below 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 4-1 Block diagram of the CPU 1516T-3 PN/DP
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
X50
4
X2 P1 X1 P1 X1 P2
PN PN PN
X2 P1 X1 P1R X1 P2R
1
2
R/S ER MT
3
5 6
7
X80 DC 24 V
PB X3
PN X1 P1R
PN X1 P2R
PN X2 P1
PB X3
L+
M
R/S
ER
MT
X1 P1, X1 P2, X2 P1
Connecting up
L+
M
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 (green/yellow)
ERROR LED (red)
MAINT LED (yellow)
LED Link TX/RX
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