Rockwell Automation 1747-DTAM-E,D17476.1 Data Table Access Module (DTAM) - Manual (Page 68)

8-8 Message Capability
Publication 1747-6.1
12-Word Message
This is a display and return message. When the message is displayed,
you are prompted to enter data from the module keypad. This value is
then written to a user-designated data file address word.
The message text is displayed on the top line, and an initial value of
zero is displayed in the lower right-hand corner of the display:
• A signed integer value may be entered using the numeric keys
followed by the >(17(5@ key. When the >(17(5@ key is
pressed, the value is stored at the data entry destination address,
and the screen returns to the previous display.
• The message cannot be overwritten while data is being entered.
• Pressing the >(17(5@ key without entering data writes a zero to
the data entry destination address and clears the message from
the display.
• Pressing the >(6&@ key clears the message from the display and
does not alter the value previously stored at the data entry
destination address.
The message text is stored in processor memory at the local file
address that is designated in the message instruction. The data entry
destination address block is automatically assigned to the four data
file words immediately following the message text as described in the
table below.
Important: The programming device does not allocate the memory
location described in the data entry destination address
block. See your software user manual for information
on using memory mapping to verify that the memory
location exists or to create the data location if it does
not exist. Otherwise the DTAM displays
,OOHJDO
&RPPDQG when it attempts to enter a value into a non-
allocated data entry destination.
Word Block Description Word Description
0
1
2 16-Character 2 ASCII
3 Message Characters per
4 Text Word
5 Block
6
7
8 File Type Identifier
9 Data Entry File Number
10 Destination Element Number
11 Address Block Subelement Number