Siemens SIMADYN D FM 458 User Manual page 114

The data telegram is defined so that all of the tabular values can be
transferred in a data block as well as in several data blocks.
The structure of a data block is shown in the following table:
The TAB or the TAB_D sends an acknowledgement to the sender for
each data block received.
The structure of the acknowledge telegram is shown in the following table:
HINWEIS New table data is now transferred into the inactive table if the "New
table" command is set.
After the "End of table" command has been received, all additional table
data are rejected until the "New table" command is received.
Application Module FM 458 - User Manual
6DD1904-0AE0 Edition 12.2001
Data type Description
char [4] Telegram ID
Each table telegram is identified with the "TAB0" ID
u_int16 Telegram commands (bit-coded)
1: New table (rising edge, from 0 -> 1)
2: End of table
u_int16 Data format (REAL=1, DINT=2)
u_int32 No. of the actual data block
u_int32 No. of tabular values (X and Y values)
The number of values must always be an even number. This
means that always the same number of X and Y values are
transferred.
u_int32 [56] / Array with tabular values. (X and Y values, always alternating)
float [56]
Data type Description
char [4] Telegram ID
Identifies each table telegram with the "TAB0" ID
u_int32 No. of the actual data block
u_int32 Status / error numbers
0xB210 OK (data block is o.k.) ......
Configuring
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