Leuze electronic GmbH + Co. KG
MA 238
i
13
The RS 232 cables are internally connectable using JST pin strips. The cable can be connected to the
device using a stable PG cable gland which provide strain relief and protection against contamination.
With the help of adapter cables with Sub-D 9 or open cable end, other RS 232 devices can also be
connected.
4.4
Operating modes
For fast commissioning, the MA 238
i
offers an additional operating mode, the "Service mode", in addition
to the "Standard mode". In this operating mode, the Leuze device can, for example, be configured on the
MA 238
i
and the network settings of the MA can be displayed. To do this, you need a PC/laptop with a
suitable terminal program, as BCL-Config from Leuze or similar.
Service switch
Select between "operation" and "service" modes with the service switch. You have the following options:
Pos. RUN:
Operation
The Leuze device is connected to the fieldbus and communicates with the PLC.
Pos. DEV:
Service Leuze Device
The connection between the Leuze device and the fieldbus is interrupted. With this switch position,
you can communicate directly with the Leuze device at the fieldbus gateway via RS 232. You can
send online commands via the service interface, configure the Leuze device using the corresponding
BCL- BPS-, …
-
Config configuration software and have the read data of the Leuze device output.
Pos. MA:
Service fieldbus gateway
With this switch setting, your PC/terminal is connected with the fieldbus gateway. In doing so, the
current setting values of the MA (e.g. address, RS 232 parameters) can be called up via a command.
Figure 4.2: Service-switch switch positions
NOTE
If the service switch is on one of the service settings, the PWR LED flashes on the front side of
the device, see chapter 8.1.2 "LED indicators on the housing".
Furthermore, on the control, the SMA service bit of the status bytes signals that the MA is in
service mode.
