IAI America ASEL User Manual
Page 136
Part 2 Programs
Chapter 3 Explanation of Commands
114
Part 2 Programs
z
WT (Wait for I/O port, flag)
Command, declaration
Extension condition
(LD, A, O, AB, OB)
Input condition
(I/O, flag)
Command,
declaration
Operand 1
Operand 2
Output
(Output, flag)
Optional
Optional
WT
I/O, flag
(Time)
TU
[Function] Wait for the I/O port or flag specified in operand 1 to turn ON/OFF.
The program can be aborted after the specified time by setting the time in operand 2.
The setting range is 0.01 to 99 seconds.
The output will turn ON upon elapse of the specified time (only when operand 2 is specified).
Note) A local flag cannot be entered in operand 1.
WT
ON
Wait for the applicable I/O port or flag to turn ON.
OF
Wait for the applicable I/O port or flag to turn OFF.
[Example 1]
WTON 15
Wait for input port 15 to turn ON.
[Example 2]
WTOF 307
10
Wait for 10 seconds for output port 307 to turn OFF.
[Example 3]
LET
1
600
Assign 600 to variable 1.
WTON *1
Wait for the content of variable 1 (flag 600) to turn ON.
[Example 4]
LET
1
8
Assign 8 to variable 1.
LET
2
5
Assign 5 to variable 2.
WTOF *1
*2
Wait for the content of variable 2 (5 seconds) for the
content of variable 1 (input port 8) to turn OFF.