Siemens SIMATIC NET S7-300 User Manual

D Glossary
A-298
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Functions (FCs)
STEP 7 code blocks of the type ”function”.
Gateway
Intelligent connectivity device that connects local area-> networks of different
types at the ISO Layer 7 level.
Industrial Ethernet
A LAN system complying with IEEE 802.3 (ISO 8802-2)
Multicast
A multicast is like ”calling all group stations”: Using one multicast frame, you can
reach all the nodes that belong to the multicast group and that are prepared to
receive frames.
NCM S7 for Industrial Ethernet
Configuration software for configuration and diagnostic functions on an Ethernet
CP.
NCM S7 for PROFIBUS
Configuration software for configuration and diagnostic functions on a
PROFIBUS CP.
Network
A network consists of one or more interconnected -> subnets with any number
of -> nodes. Several networks can exist side by side.
PC station
PC station means a PC with communications modules and applications. This PC
is intended, for example, to communicate with SIMATIC S7 devices during
process control tasks. These PCs equipped with runtime software are also
known as runtime stations.
The PC station is configured in SIMATIC NCM PC / STEP 7 for communication
with SIMATIC S7 devices.
The required runtime software is available on the PC station after APC
(Advanced PC Configuration) is installed.
PG operation
A mode of the PROFIBUS/Ethernet CP in which the SIMATIC S7-CPU is
programmed, configured or diagnosed over PROFIBUS/Ethernet. This mode is
handled by the S7 functions.

Siemens SIMATIC NET S7-300 Specifications

General

Product Type Designation	SIMATIC NET S7-300
Mounting	DIN rail mounting
Protection Class	IP20
CPU Models	Various models available (e.g., CPU 312, CPU 314)
Communication Interfaces	MPI, PROFIBUS DP
Power Supply	24 V DC power supply required. Different power supply modules available.
I/O Modules	Digital input modules, digital output modules, analog input modules, analog output modules
Programming	STEP 7 software
Supply Voltage	24V DC or 120/230V AC (depending on model)
Digital Inputs	Available via digital input modules
Digital Outputs	Available via digital output modules
Analog Inputs	Available via analog input modules
Analog Outputs	Available via analog output modules
Communication Functions	MPI, PROFIBUS DP, Ethernet (depending on model)
Protocols	MPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature	0°C to 60°C
Storage Temperature	70 °C
Memory	Depends on CPU model (e.g., 32 KB to 1.5 MB)