Siemens Simatic S7-300 Technical Data Manual page 226

Glossary
IO device
See PROFINET IO Controller
See PROFINET IO Device
See PROFINET IO Supervisor
See PROFINET IO System
IO supervisor
See PROFINET IO Controller
See PROFINET IO Device
See PROFINET IO Supervisor
See PROFINET IO System
IO system
See PROFINET IO System
IP address
To allow a PROFINET device to be addressed as a node on Industrial Ethernet, this device
also requires an IP address that is unique within the network. The IP address is made up of
4 decimal numbers with a range of values from 0 through 255. The decimal numbers are
separated by a period.
The IP address is made up of
• The address of the (subnet) network and
• The address of the node (generally called the host or network node).
LAN
Local area network to which several computers are connected within an enterprise. The LAN
therefore has a limited geographical span and is solely available to a company or institution.
Load memory
Load memory is part of the CPU. It contains objects generated by the programming device. It
is implemented either as a plug-in Memory Card or permanently integrated memory.
Load power supply
Power supply to the signal / function modules and the process I/O connected to them.
Local data
See Data, temporary
Glossary-10
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05