Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1314

■Block memory
Operand: (d1)
Device Symbol
+0 BW
+1
+2 BB BB1
BB2
■Operation constant
Operand: (s2)
Device Symbol
+0 V1
+1
+2 V2
+3
+4 HS1
+5
+6 HS2
+7
■Execution cycle (T)
Set the execution cycle (T) in SD816 and SD817 in single-precision real number.
Processing details
This instruction limits the varying speed and outputs it (BW) when the variation rate of input (E1) exceeds the limit.
E1
BW
1
0
Pd
Pd: Positive direction
Nd: Negative direction
The S.VLIMT1 instruction performs the following operations.
Condition
Positive direction E1BW
Negative direction E1<BW
11 PROCESS CONTROL INSTRUCTIONS
1312
11.3 Control Operation Instructions
Name Recommended range
Output value -999999 to 999999 [%]
Positive
b15
direction limit
alarm
Negative
direction limit
0: No alarm
alarm
1: Alarm
Name Recommended range
Positive 0 to 999999 [%/s]
direction limit
value
Negative 0 to 999999 [%/s]
direction limit
value
Positive 0 to 999999 [%]
direction
hysteresis
Negative 0 to 999999 [%]
direction
hysteresis
E1
t
BW
1
0
BB1
BW
t
Input (E1-BW)
(E1-BW)(V1T)
(E1-BW)<(V1T-HS1)
Others
(BW-E1)(V2T)
(BW-E1)<(V2T-HS2)
Others
...
b1 b0
BB2
BW
Nd
BW
BW=BW+V1T
BW=E1
BW=E1
BW=BW-V2T
BW=E1
BW=E1
Data type Standard
value

Single-precision
real number

16-bit unsigned
binary
Data type Standard
value
Single-precision 100.0
real number
Single-precision 100.0
real number
Single-precision 0.0
real number
Single-precision 0.0
real number
t
t
BB1
1
0
Last value
0
0
Last value
Set by
System
System
Set by
User
User
User
User
BB2
0
0
Last value
1
0
Last value