Omron NT4S Operation Manual page 134

Standard Mode
120
Functional Description:
- Every row variable is read from the PLC again just before being released for
editing.
- Input and cyclic output variables in the table are also continuously updated. An
exception to this is the row variable that is currently being edited. One-time
output variables are updated whenever the mask is refreshed (for example,
when the Help key is released) or whenever the table offset changes.
- Cursor keys and soft keys linked to system variables can be used to move from
one variable to another. The order of movement between the mask variables
corresponds to the order in which the variables were created in the mask (single
variables) and in the table field. The following table illustrates the system vari-
ables (and their functions) that are relevant for navigating in table fields.
System Variable Function in the Table Field
TabPgDn Page Down
TabPgUp Page Up
TabLeft Shifts to the next column on the
left
When in the leftmost column,
shifts to the previous mask
variable
TabRight Shifts to the next column on the
right
When in the rightmost column,
shifts to the next mask variable
VarTablenR0 Displays row number beginning
with 0
VarTablenR1 Displays row number beginning
with 1
- Once the data release has been set (the status LED in the Data Release key
lights up), the variables in a table field can be viewed and edited by means of the
Cursor up , Cursor down , Enter , Page up and Page down keys. If the data re-
lease has not been set (the status LED in the Data Release key is off), the
variables can only be viewed (using the Page down and Page up keys) and not
edited.
- It must be possible to read all of the variables in one column of a table with one
read request. When using 4-byte variables, this can result in a restriction of the
number of rows.
Key Functions in the Table Editor
Key: Cursor up Shifts to the previous mask variable if the cursor is locat-
ed at a single variable or at the first row variable.
Shifts to the previous row variable if the cursor is located
at a variable other than the first row variable. To be able
to scroll row-by-row, the cursor must already be posi-
tioned at the row variable at the top.
When shifting to a new column variable, the cursor is
placed at the bottom row variable (i.e. the last row vari-
able).
When shifting to a single variable, the row number re-
mains unchanged.
Section 4-6
Key/Position
Function Key / Soft Key
Function Key / Soft Key
Function Key / Soft Key
Function Key / Soft Key
On the left side of the
table field
On the left side of the
table field