Siemens Simatic S5 Operating Instructions Manual

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Test and ServiceDirect signal status displayC a l l function s e l e c t i o n menu withS e l e c t PU-functionNomenclature i n menu: D I R . SIGNATJ STATUSExample: I 1.1End functionT h i s function is only p o s s i b l e i n operatingmode 21 "PC WITH PC-MEM" (only withPC S5-130A/K) o r 22 "PC WITH PU-MEM".I n each case t h e s i g n a l s t a t u s of ani n p u t ( I ) , an output (Q), a f l a g (F),a timer (T) o r a counter (C) may bei n t e r r o g a t e d .Notes:I f t h e s t a t u s d i s p l a y is t o be c a r r i e d o u ti n operating mode 21 "PC WITH PC-MEM"and with t h e switch on t h e CPU i n t h e"CYCLE" p o s i t i o n , then t h e f u n c t i o n "Transferc o n t e n t s of PC-memory i n t o PU-memory"(page 35) must be c a r r i e d o u t f i r s t i f t h ePU-memory does not c o n t a i n t h e same programa s t h e PC.I n operating mode 21 "PC WITH PC-MEM"and 22 "PC WITH PU-MEM" and with t h eswitch on t h e CPU i n "CYCLE" p o s i t i o n ,s i g n a l s t a t u s d i s p l a y i s only possible, i ft h e operand i s contained i n t h e program.With PC S5-110A/-010 s i g n a l s t a t u s d i s p l a y s 'a r e only p o s s i b l e i f t h e switch on t h e CPU i si n t h e "CYCLE" p o s i t i o n .30