Siemens SIMATIC NET S7-300 User Manual

6 Programmed Communication Connections
A-166
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
The type definitions used in the sample DB follow.
Table 6-2 Type Definitions for the System Data Subfield
STL Ex-
plana -
tion
// Data structures IP Config
TYPE ”SUB_IP_V4”
STRUCT
id : int := 1; // ID for IP, V4-Addr.
len: int := 8; // Subfield length
b_3 : BYTE := b#16#C8; // IP_High 200.
b_2 : BYTE := b#16#0C; // IP_ 12.
b_1 : BYTE := b#16#01; // IP_ 1.
b_0 : BYTE := b#16#90; // IP_Low 144
END_STRUCT;
END_TYPE
TYPE ”SUB_NETMASK”
STRUCT
id : int := 2; // ID for subnet mask
len: int := 8; // Subfield length
b_3 : BYTE := b#16#FF; // SNM_High
b_2 : BYTE := b#16#FF; // SNM_
b_1 : BYTE := b#16#FF; // SNM_
b_0 : BYTE := b#16#00; // SNM_Low
END_STRUCT;
END_TYPE
TYPE ”SUB_DEF_ROUTER”
STRUCT
id : int := 8; // ID_4_Router
len: int := 8; // Subfield length
r_3 : BYTE := b#16#C8; // R_High
r_2 : BYTE := b#16#0C; // R_
r_1 : BYTE := b#16#01; // R_
r_0 : BYTE := b#16#50; // R_Low
END_STRUCT;
END_TYPE

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)