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The short message service in the GSM standard is used to transfer short text messages to
mobile radio users.
When the short messages are transferred, they are first transferred to the SMS control
center using a store-and-forward technique. They are buffered there and then forwarded to
the recipient. The sender can query the status of the message in the SMS control center or
can request acknowledgment of delivery.
Spontaneous message
In SINAUT networks, messages are always transmitted spontaneously; in other words,
messages are created and transmitted only when changes occur or event-driven. These
messages are known as spontaneous messages.
In the dial-up network, however, you can also specify per message whether or not a change
causes a conditional or unconditional spontaneous transmission. Unconditional spontaneous
messages cause the connection to be established immediately. Conditional spontaneous
messages are initially only entered in the send buffer of the TIM. They are only transmitted
when a connection is established to the partner for whatever reason, for example because
an unconditional spontaneous message needs to be transmitted or because the partner
calls.
Spontaneous mode
The spontaneous mode is intended only for data exchange in dial-up networks. For
transmission in dial-up networks, the data of the stations or a node station can be assigned
different priorities (high or normal), data to be sent by the master station always has high
priority. If data with high priority is waiting for transmission, a dial-up connection is
established immediately. If the data has normal priority, it is first stored on the station. This
data is then sent the next time a connection is established to the partner for whatever
reason, for example, when information with higher priority is being sent or when the partner
establishes a connection to exchange data.
ST7 message
ST7 messages consist of a message frame, an area for addresses and control fields
(message header) and an area for net data (object data) with the time stamp. The ST7
messages are divided into organizational messages and data messages. The structure of an
ST7 message is based on the guidelines of the ST7 protocol.
ST7 protocol
This protocol is used in the SINAUT ST7 system for transmitting process data over WANs.
ST7cc
SINAUT ST7cc is the ideal control center system based on SIMATIC WinCC for both
SINAUT ST7 and SINAUT ST1.
It is specially designed for event-driven and time-stamped data transmission in the SINAUT
system. It avoids the possible loss of data that can occur with cyclic polling in WinCC. It also
ensures the use of the correct event time supplied by the SINAUT stations for all WinCC
messages and archive entries. The process image integrated in ST7cc contains all process
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
Glossary
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