Siemens Simatic S7-300 CPU 31xC Series User Manual

Glossary
S7-300, CPU 31xC and CPU 31x: Installation
Glossary-10 Operating Instructions, Edition 08/2004, A5E00105492-05
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

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)