User`s manual

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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
Control data
(1) Data specified in S.LIMT 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
Upper limit
alarm
Block
memory
+2
BB2
Lower limit
alarm
b15 b12 b8 b4 b0
B
B
2
B
B
1
(0: Without alarm)
(1: With alarm)
BIN
16bit
S
S2
+0
+1
HILMT
Upper limit
value
*2
-999999 to 999999 %
Real
number
100.0 U
+2
+3
LOLMT
Lower limit
value
*2
-999999 to 999999 %
Real
number
0.0 U
+4
+5
HS1
Upper limit
hysteresis
0 to 999999 %
Real
number
0.0 U
Operation
constant
+6
+7
HS2
Lower limit
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: Make setting to satisfy HILMT
LOLMT.
Processing contents
(1) The S.LIMT instruction performs the following operation.
Condition BW BB1 BB2
E1 HILMT HILMT 1 0
(LOLMT HS2) E1 (HILMT HS1) E1 0 0
E1 LOLMT LOLMT 0 1
Other than above (hysteresis section) E1 Last value Last value
Error
• When an operation error occurs Error code: 4100
• When HS1
0 or HS2 0 Error code: 4100