10 Configuration level 1
64
Formula input -The formula character string consists of ASCII-characters and has a ma-
ximum length of 70 characters.
-The formula can only be entered via the setup program.
-The formulae can be entered freely according to the usual mathematical
rules.
-Spaces may be inserted in the formula character string without restriction.
No spaces are allowed within function designations, variable names and
constants.
Mathematics
formula
Mathematical signs and functions
Variables
Priority Mathematical sign/function
Note
high ( )
brackets
SQRT, MIN, MAX, LOG, LN, SIN,
COS, TAN, ABS, EXP, INT, FRC
functions
**
exponent (x
y
)
+, -
sign
*, /
multiplication, division
low +, -
addition, subtraction
Variable name
Note
E1
…
E4
analogue input 1
…
analogue input 4
M1
M2
mathematics 1
mathematics 2
X
process value
WR
controller setpoint
WE
segment setpoint of subsequent segment
XW
control deviation
Y
output
W1
…
W4
setpoint 1 (operating level)
…
setpoint 4 (operating level)
YH
output heating
YK
output cooling
ADRA
storage address (analogue)
TEMP
temperature at terminals
T0
sampling time
RXK1
RXK2
controller output 1
controller output 2
ADRZ
storage address (time)
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