Siemens Simatic S5 Operating Instructions Manual page 9

The numeral keys a r e used
t o i n p u t parameters and addresses,
a s well a s t o s e l e c t t h e f u n c t i o n s
v i a screen forms (menus).
Operand i d e n t i f i e r
f o r i n p u t
Operand i d e n t i f i e r
f o r o u t p u t
Operand i d e n t i f i e r
f o r f l a g
Operand i d e n t i f i e r
f o r t i m e r
Operand i d e n t i f i e r
f o r c o u n t e r
Operand i d e n t i f i e r
f o r p e r i p h e r a l s
Operand i d e n t i f i e r
f o r b y t e
(only i n conjunction
with
P , Q
o r
F)