Siemens SIMATIC IPC MD-57A - Page 99

Hardware description
A.1 Interface description
SIMATIC IPC MD-57A
Operating Instructions, 09/2023, A5E52775302-AA
97
PROFIBUS/MPI
The PROFIBUS/MPI socket has the following pinout:
Pin no.
Short designation
Meaning
Input/output
1
–
Not used
–
2
–
Not used
–
3
LTG_B
Signal line B of MPI module
Input/output
4
RTS_AS
RTSAS, control signal for received data stream.
The signal is "1" active when the directly con-
nected PLC is sending.
Input
5
M5EXT
M5EXT return line (GND) of the 5 V power supply.
The current load caused by an external consumer
connected between P5EXT and M5EXT must not
exceed the maximum of 90 mA.
Output
6
P5 EXT
P5EXT power supply (+5 V) of the 5 V power sup-
ply. The current load caused by an external con-
sumer connected between P5EXT and M5EXT
must not exceed the maximum of 90 mA.
Output
7
–
Not used
–
8
LTG_A
Signal line A of MPI module
Input/output
9
RTS_PG
RTS output signal of the MPI module. The control
signal is "1" when the PG is sending.
Output
Shielding
on connector casing
Ethernet RJ45
Pin no.
Short designation
Meaning
Input/output
1
BI_DA+
Bi-directional data A+
Input/output
2
BI_DA-
Bi-directional data A-
Input/output
3
BI_DB+
Bi-directional data B+
Input/output
4
BI_DC+
Bi-directional data C+
Input/output
5
BI_DC-
Bi-directional data C-
Input/output
6
BI_DB-
Bi-directional data B-
Input/output
7
BI_DD+
Bi-directional data D+
Input/output
8
BI_DD-
Bi-directional data D-
Input/output
S
Shielding
–
LED 1
Off
Lights up green
Lights up orange
10 Mbps
100 Mbps
1 Gbps
–
LED 2
Lights up green
Flashes green
Connection is up
indicates activity
–