Siemens OP15, Equipment Manual, Page: 80 / 177

9-2
Manual OP5, OP15
( ) J31069-D0840-U001-A2-7618
DB34 DBDxx INT = 999
Value field
Format field
Numbers field
Operand field
*
Updating in progress
Figure 9-2 Display of PLC Operands for the SIMATIC S7 (Example: OP15/A, 2x40)
The PLC operands can be scrolled up or down. With activated
SHIFT
key,
select the data type (e.g., DB, FW, IW, OW, Z, T) you wish to have dis-
played. Pressing ENTER automatically sets the corresponding data format in
the format field. Shift Lock mode is de-activated at the same time.
Use the cursor key to go to the numbers field. Enter in the numbers field
the number of the operand you want to display or modify by means of the
keypad and confirm it by pressing ENTER. Use the activated
SHIFT key to
modify the default data format (e.g., KH, KF, KM, KS, KY, KT, KC). Refer
to tables 9-1 and 9-2 for the valid S5 operands, data formats and ranges of
values.
Within the lines and value fields, the cursor can be moved horizontally. A
total of ten lines can be assigned. Confirm inputs by pressing the ENTER
key. The values of the operands you select are displayed in the value field in
the specified format.
If the cursor is located in the first field and if input has not been started and
updating is not in progress, you can insert a new variable line in front of the
current line using the Insert key and you can delete the current line with the
Delete key. If the cursor is located in a value field (not KM) containing at
least one character, use the Delete key to delete the character at the cursor
location.
When you have finished editing the operand list, the values on the PLC have
to be updated. Unlike screens, this is done immediately after an individual
value has been entered. Not until you press the Enter key again after entering
the final value is updating of all the new values explicitly initiated. During
updating, a flashing asterisk, *, is visible in the top right corner of the dis-
play. If the asterisk does not flash, this means that the OP did not succeed in
establishing a logical link to the PLC.
Inputs cannot be made while updating is in progress. Updating can be can-
celed by pressing ESCAPE.
Displaying PLC
operands
Going to numbers
fields
Entering values
Inserting and
changing lines
Updating values
STATUS VAR and FORCE VAR Functions with the OPs