Siemens SIMATIC S7-300 Module data Technical Data

Communication
3.3 S7 connections
CPU 31xC and CPU 31x, Technical data
3-26 Manual, Edition 08/2004, A5E00105475-05
3.2.10.5 SNMP communication service
Availability
The SNMP communication service is available for CPUs with integrated PROFINET
interface and Firmware 2.3.0 or higher.
Properties
SNMP (Simple Network Management Protocol) is a standard protocol for TCP/IP networks.
Reference
For further information on the SNMP communication service and diagnostics with SNMP,
refer to the
PROFINET System Description.
3.3 S7 connections
3.3.1 S7 connection as communication path
An S7 connection is established when S7 modules communicate with one another. This
S7 connection is the communication path.
Note
Global data communication, PtP communication, communication with TCP/IP and SNMP do
not require S7 connections.
Every communication link requires S7 connection resources on the CPU for the entire
duration of this connection.
Thus, every S7 CPU provides a specific number of S7 connection resources. These are
used by various communication services (PG/OP communication, S7 communication or
S7 basic communication).

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)