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Programming FCs (Functions) and FBs for
S7 Ethernet CPs
Ready-made blocks form the interface to some of the communications services
available with the Ethernet CPs. This chapter includes a detailed description of
these blocks.
The description of each FC includes the following sections that may be extended
by specific information:
S Meaning
S Call Interface
S How the Block Works
S Explanation of the Formal Parameters
S Condition Codes
This chapter provides you with information over and above the general information
available in the online help for the FCs when programming in STEP 7.
You will find further information in the following sources:
S The communication FBs (BSEND, BRCV, PUT, GET, USEND, URCV,
C_CNTRL) for programming S7 communication are described in the STEP 7
Documentation /9/.
Sample configurations and programs are available for the SEND/RECEIVE
interface described here:
S In the sample project PROJECT_ETHERNET that you can start immediately
after installing NCM S7; for a description, refer to the Primer /3/.
S On the Internet as downloadable sample projects; refer to the information in
Appendix C "Support and Training".
SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06
The Quick Start CD that can be ordered separately is a
treasure-trove of sample programs and configurations.
You can order this directly on the Internet at:
http://www.ad.siemens.de/csi/net
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