User`s manual

9 - 109 9 - 109
MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
Control data
(1) Data specified in S. BUMP instruction
Specified position Symbol Name Recommended range
*1
Unit Data format
Standard
value
Store
S1
+0
+1
E1
Output set
value
-999999 to 999999 %
Real
number
U
+2
+3
E2
Output control
value
-999999 to 999999 %
Real
number
U
Input
data
+4 e1
Mode switching
signal
0: Manual mode
1: Automatic mode
BIN
16Bit
U
Block
memory
D1
+0
+1
BW Output value (-999999 to 999999) %
Real
number
S
S2
+0
+1
T Delay time 0 to 9999999 s
Real
number
1.0 U
Operation
constant
+2
+3
a Delay zone 0 to 9999999 %
Real
number
1.0 U
D2
+0
+1
Xq
Initial deviation
value
Local
work
memory
*2
+2
+3
Xp Deviation
Used by the system as a work area.
Real
number
1.0 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: The loop tag memory and loop tag past value memory occupy a total of 128 words. (Refer to Section 3.3.1 for details.)
(2) Execution cycle ( T)
Set the execution cycle in SD1500 and SD1501 as real numbers.
Processing contents
(1) Either of the following processings is performed depending on the mode select signal (e1)
setting of the input data.
(a) In the manual mode (e1
0), the output value (BW), initial deviation value (Xg) and
deviation (Xp) are calculated with the following expressions.
• BW
output control value (E2)
• Xq
output control value (E2) output set value (E1)
• Xp
output control value (E2) output set value (E1)
(b) In the automatic mode (e1 = 1), the output value is calculated with the following expression.
Condition |Xp| a|Xp| a
Xp
X
p
X
p'
X
q
T
T
X
p
X
p'
T
T
T
BW
BW
E1 Xp
On the assumption that
|Xp|
T
T
|Xq|
• BW E1
• Xp
Xp’
BW
E1 Xp
On the assumption that |Xp|
10
-4
• BW E1
• Xp
Xp’
However, when T T in the automatic mode, BW E1, Xp Xp'
Error
• When an operation error occurs Error code: 4100