Siemens SIMATIC NET S7-300 User Manual

A-90
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
4 SEND/RECEIVE Interface in the User Program
This chapter explains the following:
 How to send and receive data.
 Which data areas can be used on the S7 CPU.
 How to program the SEND/RECEIVE interface in the user program.
You will find further information in the following sources:
 For programming and configuring nodes for connections (for example a
SIMATIC S5 PLC with the CP 1430 TCP, PC with CP 1613), please refer to the
appropriate manuals.
 The FCs for programming connections are described in Section 7.3.
 Configuring the Ethernet CP with NCM S7 is described in Chapter 5.
 Programming communication connections over the interface in the user
program is described in Chapter 6.
Sample programs:
Sample configurations and programs are available for the SEND/RECEIVE
interface described here:
 In the sample project PROJECT_ETHERNET that you can start immediately
after installing NCM S7; for a description, refer to the Primer.
 On the Internet as downloadable sample projects; refer to the information in
Appendix C “Support and Training”.
The Quick Start CD that can be ordered separately is a
treasure-trove of sample programs and configurations.
You can order this directly over the Internet at:
http://www4.ad.siemens.de/WW/news/en/21827955

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)