Siemens SIMATIC TD 200, User Manual

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3-9
SIMATIC TD 200 Operator Interface
C79000-G7076-C272-01
3.5 Forcing I/O
The Force I/O menu is only available if the force-menu enable is set in the TD 200
configuration that is stored in the CPU. The Force I/O menu allows you to force
inputs, force outputs, or unforce all inputs and outputs.
In the S7-200 CPU, you can establish password protection for the force I/O
function. The TD 200 reads the password protection level from the CPU. If the
force function is password protected, the TD 200 asks you to enter the CPU
password.
Note
The CPU password restricts editing of the force information in the S7-200 CPU.
This password is different from the password protection offered by the TD 200,
which restricts the editing of variables that are embedded in a message.
Accessing the Menu
To access the Force I/O menu, perform the following steps.
Key Action Display
1.
ESC
The TD 200 enters the Menu mode.
VIEW MESSAGES
MENU MODE:
2. The TD 200 scrolls down the menu
options two times.
FORCE I/O
MENU MODE:
3.
ENTER
The TD 200 enters the Force I/O
menu. If a force function is password
protected, the TD 200 displays the
following.
PASSWORD ********
PASSWORD REQUIRED
Note
Pressing ESC at any time while you are forcing I/O returns you to the Display
Message mode. The TD 200 automatically returns to the Display Message mode
after one minute if no keys are pressed.
Operating the TD 200