Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1369

■Block memory
Operand: (d1)
Device Symbol Name
+0 BW Output value
+1
■Operation constant
Operand: (s2)
Device Symbol Name
+0 RH Engineering
+1 value upper limit
+2 RL Engineering
+3 value lower limit
Processing details
This instruction converts the input value (E1) to the % value and outputs it.
E1
[m 3 /h]
20
16
5
0
t
The S.IENG instruction performs the following operations.
100
BW= ×(E1-RL) [%]
RH-RL
Set the engineering value upper limit (RH) and lower limit (RL) so that RH is greater than RL.
Even when RH equals or less than RL, processing is executed accordingly but does not result in engineering value inverse
transformation.
When RH equals RL, the output value (BW) becomes 0.
Operation error
Error code
3400H
3402H
3403H
Recommended range
-999999 to 999999 [%]
Recommended range
-999999 to 999999
-999999 to 999999
BW
[%]
100
80
IENG
25
20 0
0
(RH) (RL)
Error content
An invalid operation (such as division by zero) is performed.
The value specified by (s1) or (s2) is a subnormal number or NaN (not a number).
An overflow has occurred.
Data type Standard
value

Single-precision
real number
Data type Standard
value
Single-precision 100.0
real number
Single-precision 0.0
real number
t
11 PROCESS CONTROL INSTRUCTIONS
11.4 Correction Operation Instructions
Set by
System
11
Set by
User
User
1367