Hii!
I don't have any experience with modbus and my English is very bad
I am trying to make a modbus network, the network will control a lot of vfd's (30 altivar 61 from schneider), its a cold water system with 4 big chillers, they provide cold water for our hvac system.
the hardware is so simple, its PID on v1210 with 7 io-atc8 modules for the sensors, controlling all vfds with this modbus network
i just take some prints and you will see my 2 problems
on the first picture the sb3 is one of the problems, is that correct to take the connections alive? does exists another way to keep the connection alive and keep changing the frequency of my vfds?
on the second picture the problem is bigger, the vfd have a registry that include many bits, its a read registry that show the status of my vfd, but how can i sort out this bits? how can i see the bit's from 3201? i know the 3201 registry have 15 bits, see the picture and you will understand my problem!
picture 3 is the bits of the 3201 registry
sorry for the bad english
Thank you!