Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 319

Process control function blocks
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■PGS calculation
In the AUT mode, this function block outputs setting values to the time predetermined by each step as time proceeds.
There are the following three operation types: hold type, return type, and cyclic type.
Time width sets and setting values of up to 32 steps can be registered in the format of (Tn_, SVn).
The control start point depends on the PV start type (PVSTART) setting.
Setting value (SV)
Output
SVn-1
SVn
SV1,SV2
Control start
point
T1_
T2_
Time in the step (T_)
• Step specification execution
In the AUT mode, changing the executing step number (STC) jumps to the start of a specified step (T_ = 0).
Changing the time in the step (T_) jumps to the time of the step.
To jump to the end in the step (T = Tn) by changing the time in the step (T_) when the wait function is valid, refer to the wait
function.
• Step management
Progress processing of the time in the step (T_) and the executing step number (STC) is performed in the AUT mode.
Condition
STC  0
STC > 0
T: Execution cycle, i: Executing step number (STC)
*1 The execution cycle addition of the time in the step (T_) is calculated in real numbers with a resolution in units of milliseconds when the
second has been specified for the unit of time (TUNIT), or with a resolution in units of seconds when the minute has been specified for
the unit of time (TUNIT).
*2 To enable and use the wait function, refer to the wait function.
• SV
calculation
PGS
In the AUT mode, a setting value is calculated according to the executing step number (STC) and the time in the step (T_).
Condition
Ti_  0
0 < T_  Ti_
i: Executing step number (STC)
• • •
T3_
Tn_
(n=1 to 32)
T_ < 0
MV < 0  T_ < Ti_
*2
Ti_ T _
Processing result
SVi
SVi-SVi-1
Ti_
(SV
PGS
Time (T_)
Processing result
Time in the step (T_)
0
0
*1
T_ + T
0
×T_+Sv
i-1
is calculated in real numbers.)
10 LOOP CONTROL OPERATION
10.25 Multi-Point Program Setter (M+P_PGS2_)
Executing Step No. (STC)
1
Last value
Last value
Move to the next step (STC + 1)
317
10

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