thiago.serafim
Member
Hello.
I am new to S7 programming and need some help. I hope I´m clear enough...
I need to read some data(current,power,...) from a SENTRON 3WL circuit breaker using Profibus-DP
Let´s say I already have a project with some slaves connected to the network.
I have downloaded the GSD file and when I move the 3WL from the catalog to the network, a pop-up window appears asking me to select the preset configuration. The options are:
4 values
8 values
14 values
Let´s say I select 14 values. Than HW config automatically assigns the "I" and "Q" adresses. From my little knowledge I assume this 14 values will be read cyclically via DPV0.
Questions is: If i want to read 15 values, what should I do? I know I can used DPV1 to read values. Should I do this to read the extra value? Can the same S7 CPU act as a DPV0 and DPV1 master? If yes, how to get that extra data?
I hope you understand me. I used to program Rockwell PLCs and I am not familiar with S7\Profibus concepts.
Thanks
I am new to S7 programming and need some help. I hope I´m clear enough...
I need to read some data(current,power,...) from a SENTRON 3WL circuit breaker using Profibus-DP
Let´s say I already have a project with some slaves connected to the network.
I have downloaded the GSD file and when I move the 3WL from the catalog to the network, a pop-up window appears asking me to select the preset configuration. The options are:
4 values
8 values
14 values
Let´s say I select 14 values. Than HW config automatically assigns the "I" and "Q" adresses. From my little knowledge I assume this 14 values will be read cyclically via DPV0.
Questions is: If i want to read 15 values, what should I do? I know I can used DPV1 to read values. Should I do this to read the extra value? Can the same S7 CPU act as a DPV0 and DPV1 master? If yes, how to get that extra data?
I hope you understand me. I used to program Rockwell PLCs and I am not familiar with S7\Profibus concepts.
Thanks