Device Description Embedded HMI XVH-3x0
Hardware
Commissioning
14
01/05 AWB2776-1559GB
© by Moeller GmbH
4.6.2 MPI
The MPI interface is an isolated RS485 interface.
Connector assignment
Pin no.
Signal
Description
1 -
nc
2 -
nc
3
LINE B
Receive/Transmit Data B
4
REP CTL
Repeater Control
5
0 V
Reference potential for the terminating
resistors and the potential equalisation
line 1)
6
5 V
Power supply for the bus terminating
resistors
7 -
nc
Connector
9pole
8
LINE A
Receive/Transmit Data A
DSub female
9
-
nc
Case
Shield
Cable shield (connected with housing)
1) The 0V terminal must always be wired.
The MPI interface is isolated.
The max. baud rate is 1 Mbit/s.
The terminating resistors must be provided externally, e.g. in the connector, and
are not part of the device.
The 5V must not be used as a power supply for systems of other suppliers.
Î
Further information: Installation instructions, General wiring instructions [1]
5
9
4
8
3
7
2
6
1
