TABLE 12-4. Example: Loop with Delay

*1 Table 1 Programs

01:

10

Sec. Execution Interval

01:P87 Beginning of Loop

01:

6

Delay

02:

0

Loop Count

11:

P86

Do

01:

1

Call Subroutine 1

12:

P89

If X<=>F

01:25 X Loc DAY

02:

3

>=

03:

6

F

04:

31

Exit Loop if true

13:

P95

End

14:P87 Beginning of Loop

01:

1

Delay

02:

0

Loop Count

27:

P86

Do

01:

1

Call Subroutine 1

28:

P89

If X<=>F

01:25 X Loc DAY

02:

3

>=

03:

16

F

04:

31

Exit Loop if true

29:

P95

End

30:P87 Beginning of Loop

01:

6

Delay

02:

0

Loop Count

36:

P86

Do

01:

1

Call Subroutine 1

37:

P89

If X<=>F

01:25 X Loc DAY

02:

3

>=

03:

5

F

04:

32

Exit Loop if false

38:

P95

End

39:P End Table 1

*3 Table 3 Subroutines

01:P85 Beginning of Subroutine

01:1 Subroutine Number

02:

P18

Time

01:

2

Hours into current year

 

 

(maximum 8784)

02:

24

Mod/by

03:

25

Loc [:DAY ]

03:

P95

End

SECTION 12. PROGRAM CONTROL INSTRUCTIONS

*** 88 IF X COMPARED TO Y ***

FUNCTION

This Instruction compares two input locations and, if the result is true, executes the specified Command. The comparison codes are given in Table 12-5.

PARAM.

DATA

 

NUMBER

TYPE

DESCRIPTION

01:4 Input location for X

02:

2

Comparison code

 

 

(Table 12-5)

03:4 Input location for Y

04:2 Command (Table 3.8-1)

TABLE 12-5. Comparison Codes
Parameter 1Function

1

IF X = Y

2

IF X ≠Y

3

IF X ≥ Y

4

IF X < Y

*** 89 IF X COMPARED TO F ***

FUNCTION

This Instruction compares an input location to a fixed value and, if the result is true, performs the specified Command. The comparison codes are given in Table 12-5.

PARAM.

DATA

 

NUMBER

TYPE

DESCRIPTION

01:4 Input location for X

02:

2

Comparison code

 

 

(Table 12-5)

03:

FP

Fixed value

04:2 Command (Table 3.8-1)

***90 STEP LOOP INDEX ***

FUNCTION

When used within a Loop (Instruction 87), Instruction 90 will increment the index counter by a specified amount after the first time through the loop, thus affecting all indexed input location parameters in subsequent instructions. For example, if 4 is specified, the index counter will count up by 4 (0,4,8,12,...) inside the loop. Instruction 90 does not affect the loop counter which still counts by 1.

12-5