REHUM


S1	The air temperature (Celsius degrees unit, 10 times value of the actual value)
S2	The wet bulb temperature (Celsius degrees unit, 10 times value of the actual value)
S3	The pressure (millibar (hPa) unit)
D	Relative humidity and Dew point (Celsius degrees unit)

Instruction

Device address

No. of Steps

Flag

M

X

Y

K

L

F

T

C

S

Z

R

Q

D

@D

Int.

Error

Zero

Carry

REHUM

REHUMP

S1

o

-

o

-

o

5

-

S2

o

-

o

-

o

S3

o

-

o

-

o

D

o

-

o

-

o

-

Supported PLC series & Version

XPnF	CPnF	XPnE	CPnE	XPnB	PLC-S	BP	XPnA/1R	CP3A/B/P/U	CP4A~D/U
-	-	-	-	-	-	-	O	O	O

REHUM, REHUMP

REHUM(P) instructions use S1(Temperature), S2(Wet-bulb temperature), S3(Air pressure) to calculate the relative humidity and dew point then store the result in double word device D.

REHUM(P) instruction uses the values assigned to S1, S2, S3 to calculate and store the relative temperature result in D+0 and dew point result in D+1.

Example)

If X00 is ON, the REHUM instruction calculates the relative humidity and the dew point data with reference to D1 (Air Temperature), D2 (Wet Bulb Temperature), D3 (Pressure) and then save the result in D100.