mrtweaver
Member
I was wondering if someone here would have a solution to a question that mgmt has come up with.
We have 3 big vacuum pumps and they are PLC programed to automatically come on and turn off as vacuum is required. I am looking into attaching this PLC to our scada network and monitor and display which pumps are on at any point in time. The other thing i would like to do is have some sort of guage that displays the current inches of vacuum (Hg). The PLC only monitor 3 switches if no switches then only 1 pump, if 1 switch then 2 pumps and so on. This PLC and all the ones used on our scada network use modbus. So I am looking for somehting that commiunicates modbus ethernet that I can address using IP address that will supply the value so I can display it on the scada screens.
I know the one thing that would be easy would be attach into the PLC and put in some analog values and such then just monitor that way. But these proprietery PLCs are not exactly user friendly. So that idea is not the best especially since the maker of the pumps say that the plc does not support analog. It was all I could do to get the addresses that I will need to monitor.
to add another PLc would be another thing but I was hoping of something else. So any ideas are appreciated. Thank you.
We have 3 big vacuum pumps and they are PLC programed to automatically come on and turn off as vacuum is required. I am looking into attaching this PLC to our scada network and monitor and display which pumps are on at any point in time. The other thing i would like to do is have some sort of guage that displays the current inches of vacuum (Hg). The PLC only monitor 3 switches if no switches then only 1 pump, if 1 switch then 2 pumps and so on. This PLC and all the ones used on our scada network use modbus. So I am looking for somehting that commiunicates modbus ethernet that I can address using IP address that will supply the value so I can display it on the scada screens.
I know the one thing that would be easy would be attach into the PLC and put in some analog values and such then just monitor that way. But these proprietery PLCs are not exactly user friendly. So that idea is not the best especially since the maker of the pumps say that the plc does not support analog. It was all I could do to get the addresses that I will need to monitor.
to add another PLc would be another thing but I was hoping of something else. So any ideas are appreciated. Thank you.