Watlow Silver Series Addendum Manuel d'utilisateur télécharger pdf (Page 45)

Silver Series OIT  45  Watlow Addendum

Address indexing allows a screen object to display and set the value of different memory locations

depending on the value in the index. In this example we use LW-9200 as the address index. Whatever

value the index is set to is added to the address in the data transfer (and recipe display) objects. When

the index value is zero, the first recipe is used. When the index is 10 the second recipe is used. When the

index is 20 the third recipe is used. A multi-state switch is used to set the value of the index when the

user selects the recipe.

Note: You can also use the address index to create one screen that displays data for

one loop at a time with a multi-state switch or option list that allow users to switch

from one loop to another.

Data Transfer Object 1

(Lp 1 Set Point)

Address = RW 0 + index

Data Transfer Object 2

(Lp 1 Hi Alarm)

Address = RW 2 + index

Data Transfer Object 3

(Lp 1 Heat PB)

Address = RW 4 + index

Data Transfer Objects

Data Transfer Object 4

(Lp 1 Integral)

Address = RW 6 + index

Data Transfer Object 5

(Lp 1 Derivative)

Address = RW 8 + index

RW 0: (Lp 1 Set Point)

RW 2: (Lp 1 Hi Alarm)

RW 4: (Lp 1 Heat PB)

RW 6: (Lp 1 Integral)

RW 8: (Lp 1 Derivative)

RW 10: (Lp 1 Set Point)

RW 12: (Lp 1 Hi Alarm)

RW 14: (Lp 1 Heat PB)

RW 16: (Lp 1 Integral)

RW 18: (Lp 1 Derivative)

RW Memory

Recipe 2 (index = 10)

RW 20: (Lp 1 Set Point)

RW 22: (Lp 1 Hi Alarm)

RW 24: (Lp 1 Heat PB)

RW 26: (Lp 1 Integral)

RW 28: (Lp 1 Derivative)

Recipe 3 (index = 20)

Multi-State Switch

Address = LW 9200

“Recipe 1” = State 0 = 0

“Recipe 2” = State 1 = 10

“Recipe 3” = State 2 = 20

LW Memory

LW 9200: address index

2161: (Lp 1 Set Point)

1481: (Lp 1 Hi Alarm)

1891: (Lp 1 Heat PB)

1895: (Lp 1 Integral)

1897: (Lp 1 Derivative)

Controller Memory

Recipe 1 (index = 0)

Recipe Selector

1 2 ... 40 41 42 43 44 45 46 47 48

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Watlow Silver Series Addendum Manuel d'utilisateur Page 45

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