User`s manual

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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
Control data
(1) Data specified in S.VLMT1 instruction
Specified position Symbol Name Recommended range
*1
Unit Data format
Standard
value
Store
Input
data
S1
+0
+1
E1 Input value -999999 to 999999 %
Real
number
U
D1
+0
+1
BW Output value (-999999 to 999999) %
Real
number
S
BB
BB1
Positive
direction
restriction alarm
b15 b12 b8 b4 b0
B
B
2
B
B
1
(0: Without alarm)
(1: With alarm)
Block
memory
+2
BB2
Negative
direction
restriction alarm
BIN
16bit
S
S2
+0
+1
V1
Positive
direction limit
value
0 to 999999 %/s
Real
number
100.0 U
+2
+3
V2
Negative
direction limit
value
0 to 999999 %/s
Real
number
100.0 U
+4
+5
HS1
Positive
direction
hysteresis
0 to 999999 %
Real
number
0.0 U
Operation
constant
+6
+7
HS2
Negative
direction
hysteresis
0 to 999999 %
Real
number
0.0 U
*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) Execution cycle ( T)
Set the execution cycle in SD1500 and SD1501 as real numbers.
Processing contents
(1) The S.VLMT1 instruction performs the following operation.
Input (E1 BW) BW BB1 BB2
(E1
BW)
(V1 T) BW BW V1 T1 0
(E1
BW)
(V1 T
HS1) BW
E1 0 0
Positive
direction
When E1
BW
Others BW
E1 Last value Last value
(BW
E1)
(V2 T) BW BW
V2
T0 1
(BW
E1)
(V2 T
HS2) BW
E1 0 0
Negative
direction
When E1
BW
Others BW
E1 Last value Last value
Error
• When an operation error occurs Error code: 4100
• When HS1
0 or HS2 0 Error code: 4100