Analog Input Scaling in Micro820 PLC
Step 1) We can Configure First 4 Input of Micro820 PLC either Digital or Analog.
_IO_EM_AI_OO TO _IO_EM_AI_O3
Note:(They are only 0-10V not 4-20mA)
Step 2) Raw count for analog input for Micro820 PLC is
Min.:- O.O
Max.:- 4095.O
Step 3) Use following SCALER block to scale Analog Input i.e. Pressure,Temp.,Humidity etc.
Step 4) In following example,
Analog Input _IO_EM_AI_OO is used for Temperature.But It is in “Word” Data Type.So convert it to Real as SCALER Block requires Real Input(Temp_In_Real).Then put O.O in InputMin,4O95.OO in InputMaxrespectively.
The Temperature sensor used here having temperature range O-5O °C .So I Put O.O in OutputMin & 5O.O in OutputMax respectively.Temp_PV is now scaled input which we can use for further.
This is the way we can SCALE Analog Input In Micro820 PLC.
IF YOU HAVE ANY DOUBTS,PLEASE LEAVE A MESSAGE IN COMMENT BOX.
Author - Tushar