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