Hello,
RSLogix 500, a 4-20ma analog input to PLC is scaled for 0 to 100 psi. It is displayed as 0 to 100 psi on HMI, I want to make sure that for less than 4 ma current, HMI should show negative pressure. Right now, even for less than 4ma, HMI just shows zero pressure, doesn't show anything negative.
Is it a scaling issue? Please guide. For 3ma, I want HMI to show -6.25 psi and not zero. Right now even at 3 ma, it just shows 0 psi.
RSLogix 500, a 4-20ma analog input to PLC is scaled for 0 to 100 psi. It is displayed as 0 to 100 psi on HMI, I want to make sure that for less than 4 ma current, HMI should show negative pressure. Right now, even for less than 4ma, HMI just shows zero pressure, doesn't show anything negative.
Is it a scaling issue? Please guide. For 3ma, I want HMI to show -6.25 psi and not zero. Right now even at 3 ma, it just shows 0 psi.