9/25/2010

SIMATIC STEP 7 V5.2 Statement List Programming Manual

http://www.cadfamily.com/downinfo/301358.html

Description
) (nesting closed) removes an entry from the nesting stack, restores the OR bit,
interconnects the RLO that is contained in the stack entry with the current RLO
according to the function code, and assigns the result to the RLO. The OR bit is
also included if the function code is "AND" or "AND NOT".
Statements which open parentheses groups:
• U( And with Nesting Open
• UN( And Not with Nesting Open
• O( Or with Nesting Open
• ON( Or Not with Nesting Open
• X( Exclusive Or with Nesting Open
• XN( Exclusive Or Not with Nesting Open

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