Response Definition
Respond to lack of stimulus after a number of seconds.
[interrupt] response to timeout SECONDS
[ACTION_STATEMENT] ...
interrupt
Allow ESL to leave and return to any block currently executing, except a guarded block, when the response is stimulated. ESL will first finish any current action statements in the block, then execute the actions in the interrupt response, and finally return to the block and await a stimulus from within the original block.
SECONDS
An integer value between 1 and 32K inclusive, representing the number of seconds during which ESL does not receive any stimulus.
ACTION_STATEMENT
An action statement.
Description
Use this statement to respond to lack of stimulus after a number of seconds. This definition does not recognize response to interval as a stimulus.
This definition can be specified within a block.
There can be only one active response to timeout statement at any given time.
Although the program will compile if you use an integer variable for SECONDS, it is a compile-time value only. Whatever the value of the variable is when the application is compiled will be the response time; for example:
integer Time_IV is 2
...
response to timeout Time_IV
The object code will respond to timeout 2, no matter what Time_IV is during runtime.
A response to timeout can be used to suspend ESL processing to allow an external application to complete any necessary processing. Since the SECONDS is not alterable, use response to interval to make this more flexible. The following example shows how to do this.
begin guarded
for I = 1 to NumberOfSeconds
response to interval 1
leave block
end loop
end
Example
response to timeout 60
stop Remote_Application
change to program Program_Logo
See Also
response to interval Response Definition
