Siemens SIMATIC NET S7-300 User Manual

6 Programmed Communication Connections
A-168
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
6.4 Parameter Field for System Data
(CP Networking)
Meaning
Below, you can see the subfields that are relevant for networking the CP. These
must be specified in the parameter field for system data.
Some applications do not require all the subfield types - refer to the table for
details.
Structure
Subfield 1
Subfield n
Subfield 2
ID = 0
Type = 0
Number of subfields = n
Usable Subfields
Table 6-4
Subfield
Parameter
ID Type
*)
Special Features / Notes
(Please refer also to the general
description in Table 6-10 Page A-177)
Use
( mandatory
/ optional)
1 SUB_IP_V4 Local IP address m
2 SUB_NETMASK - m
8 SUB_DEF_ROUTER - m
4 SUB_DNS_SERV_ADDR This subfield can occur from 0 to 4 times.
The first entry is the primary DNS server.
o
14 SUB_DHCP_ENABLE 0: No DHCP
1: DHCP
o
15 SUB_CLIENT_ID - o
*) The general properties of the subfield types are described below in Section 6.6.

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)