Siemens SIMATIC S7-300 Manual page 157

Figure 8-2 describes the functions of the global function keys for the user
interface of the OP 07.
ESC key
>> << Soft keys
Function key
F1
Function key
F6
Note
The screens of the user interface (see Figure 8-2 and description of each
screen, Table 8-1) contain display fields and input/output fields. These fields
contain values of configured variables.
FM 354 Servo Drive Positioning Module
You can use this key to call up the previous screen of the higher levels.
You can use these keys to call up the next inset screen within the same
screen (same screen number).
You can use this key to skip from any point in the menu tree to the actual
value display main screen (PIC71).
You can use this key to skip from any point in the menu tree to the diagnostic
main screen (PIC73).
The display fields are addressed to the DB-SS ("Control 2," DB1000)
and are read directly from the FM 354.
The input/output fields are addressed to the user DB No.:1
(Control 1-CPU).
– Transmission of these values occurs from the OP 07 to the CPU into
the user DB. These values (if needed) must be transmitted to the
FM 354 by the user program.
– If certain values or control signals can be written only under the right
conditions (e.g. if axis is in HOLD mode or selection of a certain op-
erating mode is required), then the user program must ensure, by ana-
lyzing the response signals, that these conditions are met.
Human-machine interface
8-5