Expansion port MBUSD
Wieland Electric GmbH | BA000917 | 08/2021 (Rev. C)
20
5
EXPANSION PORT MBUSD
5.1
Description
The expansion port MBUSD is created as expansion port which enables to use of the next hardware
interface of Wieland routers for next signal processing. The expansion port MBUS is equipment of a
MASTER type. This interface is physically connected on RJ45 connector on appropriate router. The
expansion port MBUSD is internal supplies from appropriate router. The expansion port MBUSD is
protected against inputs overload.
Expansion port MBUS is only possible at PORT1 and PORT2.
5.2
Expansion port connection
Panel socket RJ45.
Pin
Signal
Description
Direction
1
GND
Signal and supply ground
2
GND
Signal and supply ground
3
TxRx-
M-BUS B (-)
Input/Output
4
TxRx+
M-BUS A (+)
Input/Output
5
TxRx-
M-BUS B (-)
Input/Output
6
TxRx+
M-BUS A (+)
Input/Output
7
+12 V EXT External power supply
8
+12 V EXT External power supply
Figure 8: MBUSD port connector
External supply is for converter M-BUS!
•
Because of galvanic separation, the converter must have an external power supply.
•
The signals 3 – 5 and 4 – 6 are linked inside of the modem.
Circuit example of the equipment with a router with data cable length less than 10 m
Figure 9: Circuit equipment with a router with data cable length less than 10 m
NOTICE
NOTICE
