Mitsubishi Electric MELSEC iQ-R Series - Page 1295

11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
1293
11
■Input data
■Block memory
■Operation constant
■Local work memory
The system uses this area as a work area.
To start the control from the initial status, clear data by using a sequence program.
■Execution cycle (T)
Set the execution cycle (T) in SD816 and SD817 in single-precision real number.
Processing details
This instruction performs differentiation operation according to the operation control signal (e1).
The S.D instruction performs the following operations.
E1: Input value of this time, T: Execution cycle, E1
n-1
: Last input value, Y
n-1
: Last output value
Operand: (s1)
Device Symbol Name Recommended range Data type Standard
value
Set by
+0
+1
E1 Input value -999999 to 999999 Single-precision
real number
 User
+2 e1 Operation
control signal
0: Differentiation operation performed
1: Differentiation operation not performed
16-bit unsigned
binary
 User
Operand: (d1)
Device Symbol Name Recommended range Data type Standard
value
Set by
+0
+1
BW Output value -999999 to 999999 Single-precision
real number
 System
Operand: (s2)
Device Symbol Name Recommended range Data type Standard
value
Set by
+0
+1
T Derivative time 0 to 999999 [s] Single-precision
real number
1.0 User
+2
+3
Ys Output initial
value
-999999 to 999999 Single-precision
real number
0.0 User
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value
Set by
+0
+1
E1
n-1
Last input value  Single-precision
real number
 System
e1 BW
0
However, BW = 0 when T+T = 0.
1BW=Ys
b15 b0
...
e1
TS
1+TS
BW
t
E1
t
BW=
T
T+©
T
×(Y
n-1
-E1
n-1
+E1)