Siemens SIMATIC NET S7-300 User Manual

7 Programming FCs (Functions) and FBs for S7 Ethernet CPs
A-189
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Connection
Ethernet CPCPU
STEP 7
user
program
receive
send
User data areas
AG_RECV
AG_SEND
CPU
STEP 7
user program
User data areas
AG_RECV
AG_SEND
Ethernet CP
send
receive
Note
Unless specifically stated otherwise, the information on this and the following
pages refers to AG_SEND / AG_LSEND or AG_RECV / AG_LRECV.
Sample Programs
Please note that the following sample programs are also available on the Internet.
 Sample program for the Send-Receive interface with the blocks FC5
(AG_SEND) and FC6 (AG_RECV) for S7-300:
http://support.automation.siemens.com/WW/view/en/17853532
 Sample program for the Send-Receive interface with the blocks FC50
(AG_LSEND) and FC60 (AG_LRECV) for S7-400:
http://support.automation.siemens.com/WW/view/en/18513371

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)