Siemens CPU 1518-4 PN/DP ODK - Page 32

Connecting up
CPU 1518-4 PN/DP ODK (6ES7518-4AP00-3AB0)
32 Manual, 09/2016, A5E35681108-AA
Block diagram
The figure below shows the block diagram of the CPU 1518-4 PN/DP ODK.
①
Display
PN X1 P2 R
PROFINET interface X1 Port 2
②
RUN/STOP/MRES mode selector
PN X2 P1
PROFINET interface X2 Port 1
③
Electronics
PN X3 P1
PROFINET interface X3 Port 1
④
PROFINET 2-port switch
PB X4
PROFIBUS interface X4
⑤
PROFIBUS DP driver
L+
24 V DC supply voltage
⑥
Backplane bus interface
M
Ground
⑦
Internal supply voltage
R/S
RUN/STOP LED (yellow/green)
X50
SIMATIC memory card
ER
ERROR LED (red)
X80 24 V DC
Infeed of supply voltage
MT
MAINT LED (yellow)
PN X1 P1 R
PROFINET interface X1 Port 1
X1 P1, X1 P2, X2 P1, X3 P1
LED Link TX/RX
Figure 3-3 Block diagram of the CPU 1518-4 PN/DP ODK