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2.2
Selecting Operating Mode
2-4
Start-Up
The function keys available on the initial display are labeled as follows:
The F1 key provides access to the Power-Up menu for copying and
formatting disks or running VPU diagnostics.
The operating modes are ONLINE and OFFLINE. In online mode, the VPU
and the programmable controller (P/C) communicate; and any changes
entered on the VPU can be written directly to the P/C and to the disk in
some instances. In Offline mode, there is no communication between the
VPU and P/C; and programs edits, etc., must be written to disk to save.
Function keys F4 and F5 provide the options of accessing support functions
or printing cross-references. If F4, Support, is selected, the VPU performs
this operation in Online mode. (See Section 7.) With the selection of F5,
printing of cross-references is done in the Offline mode. (See Section 8.)
After you make a selection from the menu, the operating system is loaded
for that function. As the O.S. is loaded, a message and a series of dots
appear on the screen. The message tells you what operating system is being
loaded; i.e., OFFLINE, ONLINE, etc.
NOTE: After selecting either offline or online mode, configure S-memory.
Until S-memory is allocated, the 565 functions are not accessible from the
VPU200.
SIMATIC VPU200/560 Programming Manual
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