Buffer in SINAUT TIN 3V-IE

Hi, all

How many data I can store in buffer of SINAUT TIN 3V-IE. Buffer length is 16000 telegrams, but how calculate data (real) length?

Thanks.

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.

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.

There are status messages, analog value messages, counted value messages, command

messages, setpoint messages, parameter messages and data messages for the various

information types.

The SINAUT TD7 software in the stations allows change-driven transmission of process data

according to the send buffer principle or the image memory principle.
- send buffer principle: If a send message is entered using the send buffer principle, each time the message is transferred to the TIM, it is entered completely (with the process value at that time) in the send buffer.As a result, it can exist more than once in the send buffer (with a diffrent value).

- image principle: The message can only be entered in the send buffer again after it has

been transmitted. As a result, it can only exist a maximum of once in the send buffer, with an image reference to the value to be transmitted.

If the TIM finds only the reference to the image when processing the send buffer, itcompletes the

This is the size of the memory in which the messages to be transmitted are stored for all

configured WAN drivers. If the value 0 is entered here, the entire free memory following

startup is used.

Range of values: 0 ... 1024 Kbytes

Default: 0

This is the size of the blocks into which the global message memory is segmented. Each

message to be transmitted occupies at least this space in memory. The size should be

matched up with the size of the messages most commonly transmitted.

If the size is set too small, longer messages must be distributed over several blocks. If the

size is set too large, memory space is wasted with many of the messages.

Range of values: 48 ... 65535 bytes

Default: 64

If you compute 16000*64 bytes = 1024000 bytes. I guess this is not a coincidence.

On page 452, you can see an online picture where you can see some info about memory and messages.