Siemens SIMATIC NET S7-300 User Manual

6 Programmed Communication Connections
A-169
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Example
Address Name Type Initial Value Comment
0.0 STRUCT
+0.0 DB_TYP WORD W#16#1 Identifier
+2.0 FIELD_1 STRUCT // Field 1 (here system data field)
+0.0 Type INT 0 Type of data to be transferred 0 ... 5
+2.0 ID INT 0 Connection ID (with system parameters 0)
+4.0 Subfield_Cnt INT 3 Number of subfields belonging to this field
+6.0 Sub_field_1 STRUCT // Subfield 1 SUB_IP_V4
+0.0 Sub_field_ID INT 1 // Number of the subfield
+2.0 Sub_field_len INT 8 // Length of the subfield in bytes
+4.0 STAT9 STRUCT
+0.0 STAT10 BYTE B#16#C0
+1.0 STAT11 BYTE B#16#6F
+2.0 STAT12 BYTE B#16#DE
+3.0 STAT13 BYTE B#16#6A
=4.0 END_ STRUCT
=8.0 END_ STRUCT
+14.0 Sub_field_2 STRUCT // Subfield 2 SUBNET_MASK
+0.0 Sub_field_ID INT 2 // Number of the subfield
+2.0 Sub_field_len INT 8 // Length of the subfield in bytes
+4.0 Parameter STRUCT SUBNET_MASK
+0.0 Value_1 BYTE B#16#FF
+1.0 Value_2 BYTE B#16#FF
+2.0 Value_3 BYTE B#16#FF
+3.0 Value_4 BYTE B#16#0
=4.0 END_ STRUCT
=8.0 END_ STRUCT
+22.0 Sub_field_3 STRUCT // Subfield 3 default router
+0.0 Sub_field_ID INT 8 // Number of the subfield
+2.0 Sub_field_len INT 8 // Length of the subfield in bytes
+4.0 STAT9 STRUCT
+0.0 STAT10 BYTE B#16#C0
+1.0 STAT11 BYTE B#16#6F
+2.0 STAT12 BYTE B#16#DE
+3.0 STAT13 BYTE B#16#6A
=4.0 END_ STRUCT
=8.0 END_ STRUCT

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)