Connecting Up - Siemens SIMATIC S7-1500 Equipment Manual

Connecting up

This section provides information on the pin assignment of the individual interfaces and the
block diagram of the CPU 1516T-3 PN/DP.
24 V DC supply voltage (X80)
The connector for the power supply is plugged in when the CPU ships from the factory.
The following table shows the signal names and the descriptions of the pin assignment of
the 24 V DC supply voltage.
Table 4-1 Pin assignment 24 V DC supply voltage
1L+ and 2L+ as well as 1M and 2M are bridged internally
1)
Maximum 10 A permitted
2)
If the CPU is supplied by a system power supply, it is not necessary to connect the 24 V
supply.
PROFINET interface X1 with 2-port switch (X1 P1R and X1 P2R)
The assignment corresponds to the Ethernet standard for an RJ45 plug.
• When autonegotiation is deactivated, the RJ45 socket is allocated as a switch (MDI-X).
• When autonegotiation is activated, autocrossing is in effect and the RJ45 socket is
allocated either as data terminal equipment (MDI) or a switch (MDI-X).
30
View Signal name
Connector
1
2
3
4
1)
1L+ + 24 V DC of the supply voltage
1M Ground of the supply voltage
2M Ground of the supply voltage for loop-through
2L+ + 24 V DC of the supply voltage for loop-through
Description
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
4
2)
2)