Siemens SIMATIC S5 - Page 9

The numeral keys are used
to input parameters and addresses,
as well as to select the functions
via screen
forms (menus).
Operand identifier
for input
Operand identifier
for output
Operand identifier
for flag
Operand identifier
for timer
Operand identifier
for counter
Operand identifier
for peripherals
Operand identifier
for byte
(only in conjunction
with
P, Q or F)