EDH0162En1040 – 06/99
3.44
MM4005
DY — Display a variable
Usage
IMM
PGM
MIP
Syntax
xxDYnn
Parameters
Description
xx
[int]
— Field number.
nn
[int]
— Variable number.
Range
xx
—
1
to
2.
nn
—
1
to
120.
Units
xx
— None.
nn
— None.
Defaults
xx
Missing: Error C.
Out of range: Error C.
Floating point: Error A.
nn
Missing: Error O.
Out of range: Error O.
Description
This command prints a variable’s value on line five of the front panel dis-
play. For this purpose, line five is split in two fields, each 13 characters
long. The first field on the left is defined as number 1 and the one on the
right as number 2. Parameter
xx
selects which field the variable will be dis-
played on.
Writing to field number 1 erases the previous text on the entire line.
Writing to field number 2 erases the previous text only from field number 2.
This command is useful in monitoring the status and evolution of a com-
plex program.
Returns
None.
Errors
A
—
Unknown message code.
C
—
Parameter out of limits.
J
—
Command authorized only in programming mode.
O
—
Variable number out of range.
Rel. Commands
DS
—
Display strings on screen.
YS
—
Initialize variable.
EX
—
Execute a program.
Example
1DS LOOP #
|
Print on the first part of line 5 the string “LOOP #”.
3YS0
|
Set variable #3 to 0.
4DL
|
Define label #4.
… |
… |
… |
3YA1
|
Increment variable #3 by 1.
2DY3
|
Display variable #3 on the second field of line 5.
3YL50, 4JL
|
If variable #3 is less than 50, jump to label #4.
In this example, line five of the front panel will display “LOOP #N”, where N
is the loop count.
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