Beckhoff EL3182, Документация

Страница: 119 / 145

HART
EL3182 119 Version: 1.2
The checkboxes can be used to select the data to be read and written.
The following rules apply for the data to be written:
• Tag 8 Bytes Packed ASCII
• Descriptor 16 Bytes Packed ASCII
• Date Format xx.yy.zzzz
• Message 32 Bytes Packed ASCII
Lower-case letters for packed ASCII
Lower-case letters are not allowed for packed ASCII. If lower-case letters are used, they are auto-
matically converted to capital letters.
6.3 Measured values
Command 3 has a special function. It can be used to read the instantaneous current value via HART, plus up
to 4 process values including their units. The number of returned process values depends on the HART
slave used.
A graphical display of the values is available via the "Measured Values Display" tab in TwinCAT.