Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1311

■Block memory
Operand: (d1)
Device Symbol Name
+0 BW Output value
+1
+2 BB BB1 Upper limit
alarm
BB2 Lower limit
alarm
■Operation constant
Operand: (s2)
Device Symbol Name
+0 HILMT Upper limit
*1
+1 value
+2 LOLMT Lower limit
*1
+3 value
+4 HS1 Upper limit
+5 hysteresis
+6 HS2 Lower limit
+7 hysteresis
*1 Set the upper limit (HILMT) and lower limit values (LOLMT) in such a way that HILMT equals to or exceeds LOLMT.
Processing details
This instruction applies upper and lower limiters with hysteresis to the output value.
HILMT
HILMT-HS1
LOLMT LOLMT+HS2
BB1
BB2
The S.LIMT instruction performs the following operations.
Condition
E1HILMT
(LOLMT+HS2)<E1<(HILMT-HS1)
E1LOLMT
Other than the above (hysteresis part)
Recommended range
-999999 to 999999 [%]
...
b15
0: No alarm
1: Alarm
Recommended range
-999999 to 999999 [%]
-999999 to 999999 [%]
0 to 999999 [%]
0 to 999999 [%]
BW
HILMT-HS1 HILIMT
LOLMT+HS2
LOLMT
Data type
Single-precision
real number
16-bit unsigned
b1 b0
binary
Data type
Single-precision
real number
Single-precision
real number
Single-precision
real number
Single-precision
real number
X1
BW BB1
HILMT 1
E1 0
LOLMT 0
E1 Last value
11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
Standard Set by
value

System
 System
11
Standard Set by
value
100.0 User
0.0 User
0.0 User
0.0 User
BB2
0
0
1
Last value
1309