Hi all,
We are using several types of M30 and M40 modules for several years but used always cyclic process data. We made our own anybus driver because our older instruments uses Pascal and everything works fine.
Now we need to read/write 4bytes (representing a status), defined in a separated ADI that is also mapped as process data. We want to access those 4 bytes acyclic to avoid always to send the whole process data over SPI.
Like I understand, reading the manual, it is possible to access process data acyclic with a message?
But it isn’t clear for me how to do this: with which object, instance, command? I hope it is for all kind of modules the same? At the moment we are testing it with a Profibus M40 module.
Can someone show me the right direction?
Thx, Peter