General columns in the signal table
For a description of the general signal table columns see Columns in tables with analog and digital signals.
As for digital signals, it is possible to read 16 single bits out of an INTEGER (WORD) or 32 single bits out of a DINT (DWORD).
Address
In this column, you should specify the offset of the first byte of the data-carrying binary signal within the raw data stream. The offset can be entered as hexadecimal or decimal values by selecting the appropriate option from the context menu. For a default allocation of the addresses within the column, just click on the column header. Based on the address offset and starting with the value in the first row or in the field the cursor is currently placed in, the address values are filled in automatically according to the previously selected data types.
Bit no.
This number (0…15 or 0…31) specifies the position of the desired digital signal in a 16-bit block or 32-bit block in the data stream with regard to the related offset address. Increase of bit no. by 1 up to 15 (31), then increase of address by 2 (4).
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It is recommended to configure the data to be transmitted in consecutive memory regions, i.e. the signals should have consecutive addresses. Otherwise, the performance might decrease considerably. |