Rockwell-automation 1336T Function Block Prog. Manual, Series A/B Manuale Utente Pagina 101

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Function Block Library 4–39
1336 FORCE — 5.9 August 1995
FUNCTION
1. If set = true
KIout
i–1
= Preset
KIval = KIval
i–1
= 0.
2. If set = false
sum (limited to ±32767) = Gain × (In+In–)/2048
KPout = sum × KP/4096
KIval = sum × KI/4096.
In Difout = In+In–
In Difout is clamped to ±32767.
KIout = KIout
i–1
+ [(KIval + KIval
i–1
) × (t/2 = 1/100)]
1. If KIout + KPout > Max then,
Output = Max, Hi Lim = true, Lo Lim = false.
2. If KIout + KPout < Min then,
Output = Min, Hi Lim = false, Lo Lim = true.
3. If KIout + KPout is neither 1. nor 2. then,
Output = KIout + KPout.
PARAMETERS DATA TYPE LINKABLE DEFAULT VALUE RANGE
In+ Signed Integer Yes 0
±32767
In– Signed Integer Yes 0
±32767
Set Logic Input Yes False True/False
Preset Signed Integer No 0
±32767
Gain Signed Integer No 2048
±32767
KI Unsigned Integer No 4096 0 to +32767
KP Unsigned Integer No 4096 0 to +32767
Min Signed Integer No 0 0 to –32767
Max Signed Integer No 0 0 to +32767
Lo Lim Logic Output No True/False
Hi Lim Logic Output No True/False
Output Signed Integer No
±32767
In Dif Signed Integer No
±32767
PI CTRL
(continued)
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