Using the Text Display Wizard to Configure the S7-200 CPU for Your Text Display (TD) Device
4.3 Configuring the Text Display Device
Text Display (TD) User Manual
78 System Manual, 08/2008, A5E00765548-03
Figure 4-12 Configuring the Functions for the Buttons (TD400C)
Configuring the Buttons on the Keypad
As shown in previous figure, the Configure Keypad Buttons dialog allows you to select a
symbol name and an action for each of the configurable buttons on the TD device.
● The TD 200 keypad provides 4 configurable buttons and a SHIFT button that can be
configured for up to 8 bits in the S7-200 CPU
● The TD 200C can be configured for up to 20 configurable buttons
● The TD 100C can be configured for up to 14 configurable buttons
● The TD400C can be configured for up to 15 configurable buttons
Tip
The Configure Keypad Buttons dialog of the Text Display wizard displays only those buttons
that set bits in the S7-200 CPU. The Text Display wizard does not list the buttons with other
functionality, such as ESC or SHIFT.
The symbols that you assign to the buttons on the keypad allow the logic of your user
program in the S7-200 CPU to interact with the TD device. (The Text Display wizard
suggests a symbol for these buttons. You can accept the recommendation or enter a new
symbol for the button.)
For each button, you configure the type of action:
● Set bit: When you press the button on the TD device, the TD device sets the bit on in the
S7-200 CPU. The bit stays on until the logic of your user program in the S7-200 CPU
resets the bit.
● Momentary contact: When you press the button on the TD device, the TD device sets the
bit on in the S7-200 CPU. When the TD device button is released, the TD device turns
the bit off in the S7-200 CPU.
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