Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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11 PROCESS CONTROL INSTRUCTIONS
11.2 I/O Control Instructions
1219
11
■ Loop tag past value memory
The system uses this area as a work area.
To start the control from the initial status, clear data by using a sequence program.
The loop tag past value memory occupies 32 words after the loop tag memory.
■ Execution cycle (

T)
Set the execution cycle (

T) in SD816 and SD817 in single-precision real number.
Processing details
This instruction calculates the manipulated value (MV) from the input value (E1=

MV) in the device specified by (s1) by
performing input addition processing.
The instruction also turns ON or OFF the device specified by (d1) in proportion to the manipulated value (MV).
The ON/OFF time is a value determined by assuming the time specified by the control output cycle (CTDUTY) as 100%.
The ON/OFF time is switched every execution cycle.
The instruction also performs variation rate & upper/lower limiter and reset windup of the calculated manipulated value (MV).
+68
+69 CTDUTY Control output
cycle 0 to 999999 [s]
Set a value within the following range. Single-precision
real number 1.0 User
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value Set by
+116 ALM2 Alarm detection
2
MHA2, MLA2
0: No alarm
1: Alarm
 
System
+118

Control output
cycle counter
initialization
completion flag

+119 Control output
cycle counter
(The value is
rounded off to
the nearest
whole number.)
+120 Output counter
+121 Output ON
counter
(1) Device specified by (d1)
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value Set by
©
T
CTDUTY
<=32767
b15 b0 b1 b2
MHA2 MLA2
...
ON
OFF
MV
BW
t
70%
50%
30%
30%
70%
50%
50%
70%
30%
(1)