Siemens SINAUT ST7 System Manual page 284

Glossary
Simple Internet communication
In SINAUT ST7, simple Internet communication means data exchange between TCP/IP-
compliant devices in Ethernet, landline or mobile wireless networks using the → MSC
protocol.
SINAUT
(SIemens Network AUTomation)
Station control system or telecontrol system based on SIMATIC S7
SINAUT message
An ST7 message contains the data of an ST7 object for transmission. Depending on the
object type, a message can contain either all data of an ST7 object or only a contiguous
subarea of the object data.
SINAUT object
A SINAUT object contains the data of one or more process variables such as analog values,
commands, calculated values, status information on motors, sliders etc. An ST7 object has
type-specific processing functions and change checks assigned to it to minimize the
communication traffic in the WAN. Type-specific processing functions include, for example,
threshold checks or mean value calculation with the object type for analog values. The
change check is designed so that a message is generated only when the object data has
changed compared with the last time its value was transferred or when the type-specific
processing enables generation of a message because the object data is "worth" transferring.
SINAUT ST7 protocol
This protocol is used in the SINAUT ST7 system for data transmission via classic WAN
networks and IP-based networks. It is a further development of the SINAUT ST1 protocol.
SINAUT TD7 Library
The SINAUT TD7 library is a software package with blocks for the CPU. The package can be
run both on an S7-300 or an S7-400 CPU (except the S7-400H CPUs). There are only a few
blocks intended specifically for the S7-300 or S7-400 CPUs.
The SINAUT TD7 software in the stations allows change-driven transmission of process data
between the individual CPUs and the control center, for example ST7cc. Failure of
connections, CPUs, or the control center are displayed. Once a problem has been corrected
or the CPUs or control center have started up, data is updated automatically. When
necessary, data messages can be given a time stamp.
There are two variants of the SINAUT TD7 software package:
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System Manual, 07/2009, C79000-G8976-C178-07
Station control system