Campbell Scientific CR10 CR10 Measurement and Control - Page 160

Ifx+y, Number

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SECTION 12. PROGRAM CONTROL INSTRUCTIONS TABLE 12.4. Example: Loop with Delay -1 Table 1 Programs 01: 10 Sec. Execution Interval 01: P87 01: o 02: 0 Beginning of Loop Delay Loop Count 11: P86 01: 1 Do CallSubroutine 1 12: P89 01: 25 02: 3 03: 6 04: 31 lf XF X Loc DAY >= F Exit Loop if true 13: P95 End 14: P87 01: 1 02: 0 Beginning of Loop Delay Loop Count 27: P86 01: 1 Do CallSubroutine 1 28: P89 01: 25 02., 3 03: 16 o4: 31 lf XF X Loc DAY >= F Exit Loop if true 29: P95 End P87 6 0 P86 1 P89 25 3 5 32 P95 P 3 01: P85 01: 1 02: P18 01: 2 02: 24 03: 25 03: P95 Beginning of Loop Delay Loop Count Do CallSubroutine 1 lf XF X Loc DAY >= F Exit Loop if false End End Table 1 Table 3 Subroutines Beginning of Subroutine Subroutine Number Time Hours into current year (maximum 8784) Mod/by Loc [:DAY 1 End r** 88 IF X COMPARED TO Y *** FUNCTION This lnstruction 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 4 02: 2 03: 4 04: 2 DESCRIPTION lnput location for X Comparison code (Table 12-5) Input location for Y Command (Table 3.8-1) TABLE 12-5. Comparison Codes Parameter 1 1 2 3 4 Function IFX=Y IFX+Y IFX>Y IFX

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SECTION
12. PROGRAM
CONTROL
INSTRUCTIONS
TABLE
12.4.
-1
01:
10
Example:
Loop
with
Delay
Table
1
Programs
Sec. Execution Interval
Beginning of Loop
Delay
Loop Count
Do
CallSubroutine
1
lf X<=>F
X Loc DAY
>=
F
Exit Loop
if
true
End
Beginning of Loop
Delay
Loop Count
Do
CallSubroutine
1
lf X<=>F
X
Loc DAY
>=
F
Exit Loop
if
true
End
Beginning of Loop
Delay
Loop Count
Do
CallSubroutine
1
lf X<=>F
X
Loc DAY
>=
F
Exit Loop
if
false
End
End
Table
1
Table 3 Subroutines
Beginning
of
Subroutine
Subroutine Number
Time
Hours into current year
(maximum 8784)
Mod/by
Loc
[:DAY
1
End
r**
88
IF
X COMPARED
TO
Y
***
FUNCTION
This
lnstruction 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
lnput
location for
X
Comparison code
(Table
12-5)
Input location for
Y
Command
(Table 3.8-1)
TABLE
12-5. Comparison
Codes
12:
01:
02:
03:
04:
13:
01:
01:
02:
11:
01:
14:
01:
02:
27:
01:
28:
01:
02.,
03:
o4:
29:
01:
01:
02:
01:
P87
o
0
P86
1
P89
25
3
6
31
P86
1
P89
25
3
16
31
P95
P87
6
0
P86
1
4
2
4
2
02:
03:
04:
P95
P87
1
0
Parameter
1
1
2
3
4
Function
IFX=Y
IFX+Y
IFX>Y
IFX<Y
P89
25
3
5
32
P95
P
3
P85
1
P18
2
24
25
P95
02:
03:
03:
***
89
IF
X
COMPARED
TO
F
***
FUNCTION
This
Instruclion 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
ryPE
DESCRIPTION
02:
4
Input location for X
2
Comparison
code
(Table 12-5)
FP
Fixed value
2
Command (Table 3.8-1)
***
g0
STEP
LOOP
INDEX
***
FUNCTION
When
used within
a
Loop (lnstruction
87),
lnstruction 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.
lnstruction 90 does not affect
the
loop
counter
which
still
counts
by
1.
o4:
12-4