SI-PROFINET RT User Guide
31
Issue Number: 2
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In the PROFINET environment, the controller (CONTROLLER) normally provides the IO
device (PROFINET option module mounted on a drive) with its IP address, subnet mask
and default gateway address. As a group, these are set as either permanent or
temporary values. (Temporary values are cleared by any reset). In an already
operational environment, IO devices are recognized by their name of station - an ASCII
descriptive name defined during system start-up via the supervisor (an engineering
workstation). When IO device replaced in the field, it will not normally have a name of
station, so when it starts up it uses LLDP and DCP to determine from its neighbours the
name of station of the device replacing. When successful, it adopts that name of station
and the controller can then initialize it. During the start-up the supervisors will normally
locates and identify unnamed devices by their MAC and IP address.
When the IP address and subnet mask are set to change and drive parameters saved,
the new IP address is saved as permanent in the drive. Note that the controller may
later override the setting and alter these values.
The subnet mask is normally written to by the controller during the parameterization
phase.
The subnet mask supports IP address routing by allowing the module to determine if
destination addresses are either:
•
On the same subnet and can therefore be transmitted directly, or
•
On a remote network and should therefore, be transmitted through the default
gateway.
This parameter displays the default gateway IP address given to the module by the
controller.
S.02.006
IP Address
Minimum
0.0.0.0
Maximum
255.255.255.255
Default
0.0.0.0
Units
Type
32 Bit Volatile
Update Rate
Display Format
IP address
Decimal Places
0
Coding
RO, NC, PT, BU
S.02.007
Subnet Mask
Minimum
0.0.0.0
Maximum
255.255.255.255
Default
0.0.0.0
Units
Type
32 Bit Volatile
Update Rate
Display Format
IP address
Decimal Places
0
Coding
RO, NC, PT, BU
S.02.007
Default Gateway
Minimum
0.0.0.0
Maximum
255.255.255.255
Default
0.0.0.0
Units
Type
32 Bit Volatile
Update Rate
Display Format
IP address
Decimal Places
0
Coding
RO, NC, PT, BU
