Siemens SIMATIC NET S7-300 User Manual

6 Programmed Communication Connections
A-165
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Example
Below, you will find a sample of a configuration data block with the parameter field
for system data and a parameter field for a TCP connection.
Table 6-1 CONF_DB
STL Ex-
plana -
tion
DATA_BLOCK DB271
TITLE=IP_CONFIG for 1 active nTCP connection,
AUTHOR : Alfred //CP data : IP=200.12.1.144, Router=200.12.1.80
FAMILY : AS300 //Connection data: Destination IP addr=200.12.1.99,
NAME : ipconf //Local port = 4001, remote port = 5001, estab=active
VERSION : 1.0 //07-June-2005
STRUCT
DB_TYP : INT := 1; //
// --------------------------------------------------------- System Data ------
sys_pb : INT:=0; // Subfield type: System data for CP
sys_id : INT:= 0; // System parameter ID, always 0
sys_sb_cnt: INT:= 3; // Number of subfields in
// System parameter field
ip_addr: SUB_IP_V4; // IP address of the CP
ip_netmask: SUB_NETMASK; // Subnet mask of the CP
ip_router: SUB_DEF_ROUTER; // Default router
// --------------------------------------------------------- tcp VB 01 ---------
tcp_pb_01 : INT := 1; // Subfield type: TCP connection
tcp_id_01 : INT := 1; // 1. TCP_VB
tcp_sb_cnt_01 : int := 6; // 6 Elements per TCP connection
tcp_vb_ip_01 : SUB_IP_V4; // IP address of the partner
tcp_loc_01 : SUB_LOC_PORT; //
tcp_rem_01 : SUB_REM_PORT; //
tcp_vb_01_name : CON_NAME_L; //
tcp_vb_01_kbus : SUB_KBUS_ADDR; // Relevant only for S7-400
rq_01 : ACT_CN_REQ;//
// ------------------------------------------------------------------------------
END_STRUCT ;
BEGIN
tcp_loc_01.port := 4001; // Definition of ports when value of
tcp_rem_01.port := 5001; // differs from predefinition !
END_DATA_BLOCK
// ------------------------------------------------ end ”IP_CONF_DB_271” -----

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)