Download Operating the TD 200

TD 200 Parameters and Messages
No Acknowledgement, Edits Allowed
In this combination of no acknowledgement required and edits allowed, the TD 200
displays a message and then waits for the operator to edit it. All of the variables
within the message are updated at the update rate. Since the message does not
require acknowledgement, this type of message is removed from the TD 200
display if a higher priority message is enabled in the S7-200 CPU. An up or down
arrow in the right-most character position indicates more messages. The operator
can press either the UP or the DOWN arrow key to scroll through the other
enabled messages.
For more information about editing variables, see Section D.6.
Acknowledgement, Edits Allowed
In this combination of acknowledgement required and edits allowed, the TD 200
displays the message, causes the entire message to flash (blink), and then waits
until the operator acknowledges the message and edits the variables. This
combination requires that the operator edit the variables. If the operator attempts
to exit before editing all the variables in the message, the message flashes to
indicate that edits are pending.
When the message is enabled in the S7-200 CPU, the TD 200 notes this and, if
there is space available on the display, gets the message from the CPU. The
TD 200 then displays the message and causes the entire message to flash to
notify the operator that the message is present and must be acknowledged.
For more information about editing variables, see Section D.6.
D-22
SIMATIC TD 200 Operator Interface
C79000-G7076-C272-01