Mpi/Dp Interface - Siemens SIMATIC PC Adapter USB Manual

4.4

MPI/DP interface

Pin assignment
Pin assignment of the MPI/DP interface:
Description of signals
Pin no.
1
2
3
4
5
6
7
8
9
Shielding
* The shielding is interconnected with the USB interface via the adapter electronic module.
PC Adapter USB
A5E01134250-01
Short name Meaning
NC Not connected
M24V Zero volt of the 24 V power supply,
provided by the electronic DC/DC circuit of
the adapter (AS potential range)
LTG_B Data line B
RTS_AS RTSAS control signal for receive data
current. The signal is active '1' when the
directly connected AS is transmitting data.
M5V Reference potential of the MPI/DP
interface for the RTS_AS and RTS_PG
signals
P5V Not connected
P24V Zero volt of the +24 V power supply,
provided by the electronic DC/DC circuit of
the adapter (AS potential range)
LTG_A Data line A
RTS_PG Adapter's RTS output signal. The signal is
'1' when the adapter is transmitting data.
The signal is not contained in the 0.3 m
MPI cable!
on connector housing*
Hardware Design of the PC Adapter USB
Input /
Output
–
Input
Input / Output
Input
Input
Input
Input / Output
Output
4-5