Hardware Design of the PC Adapter USB
PC Adapter USB
A5E00166354-02
4-5
4.4 MPI/DP Interface
Connector Pin Assignment
The MPI/DP socket is configured as follows:
5
1
9
6
Description of Signals
Pin.
No.
Abbreviated
Name
Meaning Input/
Output
1 NC Not used –
2 M24V 24V supply’s 0V line,
supplies adapter electronics
via DC/DC converter (PC potential area)
Input
3 LTG_B Data line B Input/output
4 RTS_AS RTSAS control signal for
receive data current. The signal
is active ‘1’ when the directly
connected AS is transmitting.
Input
5 M5V Reference potential of the MPI/DP
interface for the RTS_AS and RTS_PG
signals
Input
6 P5V non used
7 P24V 24V supply’s +24V line,
supplies adapter electronics
via DC/DC converter (PC potential area)
Input
8 LTG_A Data line A Input/output
9 RTS_PG Adapter’s RTS output signal. The signal is
‘1’ when the adapter is transmitting.
The signal is not contained in the 0.3 m
MPI cable!
Output
Shield On socket casing*
* The shielding is provided by a continuous screen from the adapter housing to the
USB socket.
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