I am working on a project where I have UnilogicUnistream MASTER which read/write data from 10 slaves over CPU's 485 port.
I know that Unistream OPLC can be and MASTER and SLAVE at the same time, but I am wondering is this possible over the same 485 communication port?
Example: SCADA is MASTER to OPLC, and OPLC is MASTER to 10 slaves
Example: SCADA(M) --- OPLC(S & M) --- DEVICES in the FIELD (S)
So please can somebody to answer me and explain a little bit?
Do I need maybe one more 485 com module?
Or I can do it somehow over the same com port?