General columns in the signal table
For a description of the general signal table columns see Columns in tables with analog and digital signals.
Address
In this column, you should specify the offset of the first byte of the value 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.
Data type
In the fields of this column, you can select the relevant data type used for each signal. Click in the corresponding field and select the data type from the drop-down list. The address space depends on the data type. Therefore, an adjustment of address entries might be necessary after changing the data types.
Available data types:
|
Data type |
Description |
Values Range |
|---|---|---|
|
BYTE |
8 bit without positive or negative sign |
0 … 255 |
|
INT |
16 bit with positive or negative sign |
-32768 … 32767 |
|
WORD |
16 bit without positive or negative sign |
0 … 65535 |
|
DINT |
32 bit with positive or negative sign |
-2147483647 … 2147483647 |
|
DWORD |
32 bit without positive or negative sign |
0 … 4294967295 |
|
FLOAT |
IEEE754; single precision; 32 bit floating point |
±3.402823 · E+38 ... ±1.175495 · E-38 |
|
DOUBLE |
IEEE754; Double Precision; 64-bit floating point value |
2.225E-308 … 1.798E+308 |
|
FP_REAL |
Fixed point real; Q15.16; 15 integer bits and 16 fractional bits; |
-32768 … 32767.9999 |
Note |
|
|---|---|
 |
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. |