Siemens SIMATIC VPU200/560 Programming Manual page 111

SIMATIC VPU200/560 Programming Manual
The fields available in the Function 17 menu are defined as follows:
Type – The default for this field is I, Ignore, which tells the VPU to
ignore this memory category. The other options for this field are V,
Verify, or E, Examine.
Memory – The memory category to be verified or examined is listed in
this field.
Status – After verification or examination, the VPU displays in this
field whether the memory type passed or failed the comparison.
Modified Locations – The VPU lists in this field the memory addresses
of ladder logic or the number of the discrete elements that fail the
compare. For the Verify function, only the first failure is listed. With
the Examine function, at the fourth error found, the VPU operator is
given the option to continue the search or go to the next memory
category. The Sequencer Scan Time and Ladder Networks categories
are treated differently from the other options. Since there is only one
memory location for the scan time information, a passed or failed
status only is indicated. If the status is failed, a 1 is listed in the
Modified Locations field. When the Ladder Networks are verified. only
the first address in a rung is listed in the Modified Locations field.
The four arrow keys on the VPU are used to move the cursor from field to
field for selection and entry of the type of compare to perform on a
particular memory category. The function keys shown in Figure 9-4 are
listed and described below.
Before the compare operation is begun, the F1 key returns
ABORT
F1
the display to the Master Support Functions menu. After
the compare is initiated, F1 returns the display to the
Function 17 menu.
The F2 key saves the options selected to the program disk.
SAVE
F2
The F3 key displays the last screen loaded to disk.
LOAD
F3
The F4 key initiates the compare function you select.
START
F4
The Verify, F5, key tells the VPU to compare a memory
VERIFY
F5
category in the P/C to the same memory category on the
disk. This is the key used for entry in the Type field as
described above. The Verify function for a particular
category stops when the first error is logged and moves to
the next category.
The Ignore, F6, key is entered in the Type field for any
IGNORE
F6
memory categories that are not to be examined or verified.
Using VPU200 Support Functions 9-7