Device description
1
8
MA 255
i
Le
u
ze electronic
Service interface
The service interface can be accessed once the MA 255
i
housing cover has been removed
and features a 9-pin Sub-D connector (male). A crossed RS 232 connection cable is required
to make the RxD, TxD and GND connections.
Figure 4.3:
Connecting the service interface to a PC/terminal
Attention!
For the service PC to function, the RS 232 parameters must be the same as those of the
MA. The Leuze standard setting of the interface is 9600 bd, 8N1 and STX, data, CR, LF.
4.5
Fieldbus systems
Various product variants of the MA 2xx
i
series are available for connecting to different
fieldbus systems such as PROFIBUS DP, PROFINET-IO, DeviceNet and Ethernet.
4.5.1
DeviceNet
The MA 255
i
is designed as a DeviceNet device with a baud rate of max. 500 k Bd. The
functionality of the device is defined via parameter sets which are clustered in objects,
classes and instances. These objects … are contained in a EDS file.
The MA 255
i
gateways can be operated as network devices on the DeviceNet. The MA 255
i
features multiple M 12 connectors / sockets for the electrical connection of the supply
voltage, the interface and the switching inputs and outputs. Additional information on the
electrical connection can be found in chapter 7.2.
The MA 255
i
supports:
• DeviceNet slave functionality
• CIP profile
• baud rates of 125 kBd, 250 kBd and 500 kBd
•
no
slave address modification via DeviceNet
For further details, see chapter 12!
5 GND
3
TxD
2 RxD
GND 5
TxD
3
RxD 2
1
1
PC/terminal
COM interface
MA 255
i
Service interface
