mainstreetmark
Member
I seem to be running into an issue. I have a scaling FB in a Siemens PLC, and so it accurately displays the scaled output as a REAL. When I read it with the HMI, however, it comes in as a very large INT, or more likely, a DINT. I know that DBWxx addresses a word (INT) and that DBDxx addresses a double word (DINT), but is there a way to address a REAL?
I suspect I just use the DBWxx (since a bit is a bit to an address), but if the HMI expects an INT at this address and the PLC is writing a REAL at this address, I won't get what I want.
Advice?
(S7300 PLC. VTScada HMI)
I suspect I just use the DBWxx (since a bit is a bit to an address), but if the HMI expects an INT at this address and the PLC is writing a REAL at this address, I won't get what I want.
Advice?
(S7300 PLC. VTScada HMI)