Govind Rao
Member
Dear Sirs,
I have just joined the forum and honestly know nothing about PLC though we are using S7-1200 and is being operated by a third agency.
My question is the input from the DPT to measure the differential pressure of air flow through the air duct is fed into the PLC and calculated value
shown on the SCADA.
The maximum airflow in the duct is 500Nm3 per hour and the minimum is 0.
The question is, Do we input 0 as 4mA and 20mA as 500 Nm3. Or do we log in Square Root function and get the real time value on the screen
I have just joined the forum and honestly know nothing about PLC though we are using S7-1200 and is being operated by a third agency.
My question is the input from the DPT to measure the differential pressure of air flow through the air duct is fed into the PLC and calculated value
shown on the SCADA.
The maximum airflow in the duct is 500Nm3 per hour and the minimum is 0.
The question is, Do we input 0 as 4mA and 20mA as 500 Nm3. Or do we log in Square Root function and get the real time value on the screen