User`s manual

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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
Control data
(1) Data specified in S.D instruction
Specified position Symbol Name Recommended range
*1
Unit Data format
Standard
value
Store
S1
+0
+1
E1 Input value -999999 to 999999
Real
number
U
Input
data
+2 e1
Operation
control signal
b15
b12 b8
b4 b0
e
1
0: With derivative operation
1: Without derivative operation
BIN
16bit
U
Block
memory
D1
+0
+1
BW Output value (-999999 to 999999)
Real
number
S
S2
+0
+1
T Derivative time 0 to 999999 s
Real
number
1.0 U
Operation
constant
+2
+3
Ys
Output initial
value
-999999 to 999999
Real
number
0.0 U
Local work
memory
*2
D2
+0
+1
E1
n-1
Last input
value
Used by the system as a work area.
Real
number
S
*1: The data of the item(s) where the values within the recommended range are given in the parentheses are stored by the system.
Users cannot set the data.
*2: When control is to be started from the initial status, the data must be cleared with the sequence program.
(2) Execution cycle ( T)
Set the execution cycle in SD1500 and SD1501 as real numbers.
Processing contents
The S.D instruction performs the following operation.
e1 BW
0
T
BW
E1
n-1
T
T
(Y
n-1
E1)
Note that T T 0, BW 0.
1BW
Y
s
E1: Current input value, T: Execution cycle, Y
n
: Last output value, Y
n-1
: Last output value
Error
• When an operation error occurs Error code: 4100