1. Attached are the technical parameters of pk460. Please comment.We suggest the installation o fan alarm of “very low level” in the preparation tank. When the “low level” is active, the addition of antifoam and industrial water will start (by operator or automatically, it isn’t clear). The dosing pump will be stopped by the “very low level”. The operator than can isolate the empty tank and putting in operation the full one. In case that the two electrical valves indicated in row 6 of the table are installed in each tank the intervention of the operator won’t be necessary. 2. The device adopts Ethernet to transmit signals, is it OK? Is S1200 available for PLC?PLC Siemens 1200 is OK. The signals between the CPUs will be transmitted over S7 protocol (PUT&GET commands), to allow such communication the supplier CPU should be "GET & PUT enabled" in the HW configuration and the DB where data are stored has to be not-optimized.In order to complete the data management by our side, it would be very helpful if you could send us the DB with all the available signals from your side.