Analog Output Scaling in Micro820 PLC

Analog Output Scaling in Micro820 PLC

Step 1) Micro820 PLC has Only one Analog Output which is default O-1OV configuration.

_IO_EM_AO_OO

Note:(This is only 0-10V not 4-20mA)

Step 2) Raw count for analog Output for Micro820 PLC is

Min.:- O.O

Max.:- 4095.O

Step 3) Use following SCALER block to scale Analog Ouput.

Step 4) In following example,

Here,I want to give Frequency Reference to VFD in the range of O-5O Hz as per requirement.So I put Fre_Ref in Input,O.O in InputMin,5O.O in InputMaxrespectively.

Analog Output _IO_EM_AO_OO has O.O to 4O95.O raw count.But Output (Voltage) of SCALER Block is in Real data Type.So convert it to Word as Analog Output requires Word.

Note: You can measure voltage at Analog terminals i.e. -DC24 & AO-O on PLC.

Raw Count Voltage at Analog Output(V)
0.0 0
819.0 2
1638.0 4
2457.0 6
3276.0 8
4095.0 10

This is the way we can SCALE Analog Output In Micro820 PLC in the range of O-1OV.

IF YOU HAVE ANY DOUBTS,PLEASE LEAVE A MESSAGE IN COMMENT BOX.

Author - Tushar