Communication
14.1 Communication services
S7-400H
System Manual, 03/2012, A5E00267695-11
215
14.1.3
OP communication
Properties
OP communication is used to exchange data between HMI stations, such as WinCC, OP, TP
and SIMATIC modules which are capable of communication. This service is available for
MPI, PROFIBUS and Industrial Ethernet subnets.
You can use the OP communication for operator control, monitoring and alarms. These
functions are integrated in the operating system of SIMATIC S7 modules. A CPU can
maintain several simultaneous connections to one or several OPs.
14.1.4
S7 communication
Properties
A CPU can always act as a server or client in S7 Communication. A connection is configured
permanently. The following connections are possible:
●
One-sided configured connections (for PUT/GET only)
●
Two-side configured connections (for USEND, URCV, BSEND, BRCV, PUT, GET)
You can use S7 communication via integral interfaces (MPI/DP, PROFIBUS-DP,
PROFINET) and, if necessary, via additional communication processors (CP443-1 for
Industrial Ethernet, CP443-5 for PROFIBUS).
The S7-400 features integrated S7 communication services that allow the user program in
the controller to initiate reading and writing of data. The S7 communication functions are
called via SFBs in the user program. These functions are independent of the specific
network, allowing you to program S7 communication over PROFINET, Industrial Ethernet,
PROFIBUS, or MPI.
Содержание SIMATIC S7-400H
Страница 24: ...Preface 1 1 Preface S7 400H 24 System Manual 03 2012 A5E00267695 11 ...
Страница 46: ...Getting Started 4 5 Special layout features of SIMATIC Manager S7 400H 46 System Manual 03 2012 A5E00267695 11 ...
Страница 120: ...Memory concept 10 1 Overview of the memory concept of S7 400H CPUs S7 400H 120 System Manual 03 2012 A5E00267695 11 ...
Страница 258: ...Communication 14 8 General issues regarding communication S7 400H 258 System Manual 03 2012 A5E00267695 11 ...
Страница 354: ...Synchronization modules 18 3 Selecting fiber optic cables S7 400H 354 System Manual 03 2012 A5E00267695 11 ...
Страница 434: ...Technical data 20 6 Runtimes of the FCs and FBs for redundant I Os S7 400H 434 System Manual 03 2012 A5E00267695 11 ...
Страница 460: ...Function modules and communication processors supported by the S7 400H S7 400H 460 System Manual 03 2012 A5E00267695 11 ...