8/2/2019 Configuring Acknowledgeable Messages for the TD200
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show the entry listConfiguring acknowledgeable messages for the
TD200
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QUESTION:How can I configure messages that are to be
acknowledged on the TD200?
ANSWER:If you want to ensure that important messages are
displayed and specially handled by the operator,you can configure a
message so that it has to be acknowledged.The message flashes when
it is displayed on the TD 200. You must then press ENTER on the TD
200to acknowledge the message.After a message has been acknowledged
it stops flashing, the bit for the acknowledgment message isset in
the CPU and the b it for release this message is reset in the
CPU.
Configuring an acknowledgeable message:
1. In STEP 7/MicroWin V3.1 select the menu command "Extras >
TD 200 Wizard...".2. Now you select "Next" in each window that is
displayed.
You repeat this until you get to the "Message 1 of n" window,
where "n" is the number yourspecified two windows back for the
number of messages to be configured. You can jump
between the two windows using the "Back" and "Next" buttons.3.
Position you cursor on the first text field and enter your message
text.
The "Message 1 of n" window indicates- as of which byte (VB) the
message text is stored (start address of the message)- and which
marker in the user program of the S7 controller has to have the
value "1" for themessage to be displayed.
4. To make the message acknowledgeable you select the "Embedded
data..." button.Note:When selecting the "Embedded data..." button,
do not position the cursor at the end of themessage.
5. There you select "Not available" as data format and enable
the check box next to the text"Message must be acknowledged by
user".
6. After acknowledging the window with OK the message window of
the configured message
number is displayed. In addition, now the acknowledgment message
bit assigned to themessage is displayed. This is generated
automatically by the system and cannot be changed.The bit is always
generated from the data area reserved for this message.Example:If
the start address of the message in the message window is specified
as VB132 and youhave defined a message of 20 characters
configuration range, then the system generates theaddress of the
acknowledgement message bit within the range of VB132 - VB151.This
marker bit can be processed in the user program.
7. When you have configured an acknowledgeable message, click
the "Close" button to quit theTD 200 Wizard.
The acknowledgement message bit assigned to the message is reset
automatically by the system to"1" in the CPU once the message has
been acknowledged by the operator by pressing the ENTERkey on the
TD 200. And the bit that has activated the message (message release
bit) is reset in the
CPU. You have to reset the acknowledgment message bit manually
in the user program.
Keywords:Message configuration
Entry ID:299088 Date:2001-09-03
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