Status displays and operational controls
38
MA 255
i
Le
u
ze electronic
8.2.2
Connector X30 … connectors
PCB connectors
X30 … X32
are available in the MA 255
i
for connecting the respective
Leuze devices via RS 232.
Figure 8.3:
Connections for Leuze devices
Attention!
Several Leuze devices may not be connected to the MA 255
i
simultaneously, as only one
RS 232 interface can be operated.
8.2.3
RS 232 service interface – X33
The
X33
RS 232 interface facilitates the configuration of the Leuze device and the MA 255
i
via PC, which is connected by means of a serial null modem cable.
X33 pin assignment – service connector
8.2.4
S10 service switch
The
S10
DIP switch can be used to select between the "operation" and "service" modes,
i.e. you switch between the following options here:
• Operation (RUN) = default setting
• Service Leuze device (DEV) and
• Service fieldbus gateway (MA)
Figure 8.4:
DIP switch service - operation
SERVICE (9-pin SUB-D connector)
Pin
Name
Remark
2
RXD
Receive Data
3
TXD
Transmit Data
5
GND
Functional earth
Table 8.1:
SERVICE pin assignment
