Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1295

■Input data
Operand: (s1)
Device Symbol Name
+0 E1 Input value
+1
+2 e1 Operation
control signal
■Block memory
Operand: (d1)
Device Symbol Name
+0 BW Output value
+1
■Operation constant
Operand: (s2)
Device Symbol Name
+0 T Derivative time
+1
+2 Ys Output initial
+3 value
■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.
Operand: (d2)
Position Symbol Name
+0 E1 Last input value
n-1
+1
■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).
E1
t
The S.D instruction performs the following operations.
e1 BW
0
T
BW=
T+© T
However, BW = 0 when T+T = 0.
1 BW=Ys
E1: Input value of this time, T: Execution cycle, E1
Recommended range
-999999 to 999999
...
b15
0: Differentiation operation performed
1: Differentiation operation not performed
Recommended range
-999999 to 999999
Recommended range
0 to 999999 [s]
-999999 to 999999
Recommended range

BW
TS
1+TS
×(Y -E1 +E1)
n-1 n-1
: Last input value, Y
n-1
Data type
Single-precision
real number
16-bit unsigned
b0
binary
Data type
Single-precision
real number
Data type
Single-precision
real number
Single-precision
real number
Data type
Single-precision
real number
t
: Last output value
n-1
11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
Standard Set by
value

User
 User
11
Standard Set by
value

System
Standard Set by
value
1.0 User
0.0 User
Standard Set by
value

System
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