Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 618

Process control function blocks
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Multi-point program setter (PGS2)
■Operation method
Steps (time width and setting value) are registered and the progress of each step is managed.
The setting value (SV) is calculated according to the time in the step (T) in each step.
■Relation between the program setting method and each variable
Register each step data as shown below. Set the program start point to SV0.
Setting value SV
Engineering value
high limit RH
SV high limit
value SH
SV4, SV5
SV2, SV3
SV1
SV0
SV low limit value
SL
Engineering value
low limit RL
Tn: Time in the step (T)
n: Executing step No. (STC)
The following main parameters are changed from the program setter (PGS).
• MV (Output value)  SV (Setting value)
• SV (Setting value)  STC (Executing step number) + T (Time in the step)
For details on each variable, refer to the following.
Tag Data List
■Registration format
Register the step data up to 32 points integer (INT).
The setting range is from -32768 to 32767.
■Time management
Set the time in units of seconds or minutes. (Set at TUNIT in the tag data.)
■Output high/low limit alarm
Place the SV low limit alarm SVLA and SV high limit alarm SVHA to bit 0 and bit 1 of the tag data +3 (ALM).
(Variable names differ from those for the program setter (PGS).)
■Mode and operation type
Two control modes are available: MANUAL and AUTO.
In the AUTO mode, HOLD, RETURN, or CYCLIC can be selected for the operation type.
APPX
616
Appendix 3 Related Functions of Process
Number of step setting STNO (maximum 32 points)
T1
T2
T3
T4
SV high limit alarm SVHA
n=STNO
SV low limit alarm
SVLA
Time
T
T
n-1
n

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