MARRC75KR07091E Rev G A. KAREL LANGUAGE ALPHABETICAL DESCRIPTION
• If NOWAIT is specified in a PULSE statement, the next KAREL statement will be executed
concurrently with the pulse.
• If NOWAIT is not specified in a PULSE statement, the next KAREL statement will not be
executed until the pulse is completed.
See Also: Appendix E , ‘‘Syntax Diagrams’’ for more syntax information
Example: In the following example a digital output is pulsed, followed by the pulsing of a second
digital output. Because NOWAIT is specified, DOUT[start_air] will be executed before DOUT[5] is
completed.
PULSE Statement
PULSE DOUT[5] FOR (seconds * 1000) NOWAIT
PULSE DOUT[start_air] FOR 50 NOWAIT
A.17.28 PURGE CONDITION Statement
Purpose: Deletes the definition of a condition handler from the system
Syntax : PURGE CONDITION[cond_hand_no]
where:
cond_hand_no : an INTEGER expression
Details:
• The statement has no effect if there is no condition handler defined with the specified number.
• The PURGE CONDITION Statement is used only to purge global condition handlers.
• The PURGE CONDITION Statement will purge enabled conditions.
• If a condition handler with the specified number was previously defined, it must be purged
before it is replaced with a new one.
See Also: ENABLE CONDITION Statement Chapter 6 CONDITION HANDLERS , Appendix E ,
‘‘Syntax Diagrams’’ for more syntax information
Example: In the following example, if the BOOLEAN variable ignore_cond is TRUE, the
global condition handler, CONDITION[1], will be purged using the PURGE statement; otherwise
CONDITION[1] is enabled.
PURGE CONDITION Statement
IF ignore_cond THEN
PURGE CONDITION[1]
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