User`s manual

Chapter 5 - Initializing the GP
GP-477R/577R Series User's Manual 5-5
The System DataArea selection process follows this formula [System Data
Start Address + n]. For example, if the System Area Start Address was
D00200, and the Change Screen Number option had been selected—if you
refer to the System Area Contents screen displayed above—because
Change Screen Number's address is pegged at +6, its word address would
be D00200+6=D00206. For more information on LS Areas 16 to 19,
PLC Connection Manual,1.1.2 "LS Area Structure"
Addresses LS16 to LS19 are
fixed since they control the
Global Window. These ad-
dresses cannot be used for any
other purpose.
The GP unit can display one Global Window and two Local Windows at any
one time. The Global Window is common to all the display screens. The
Local Window displays exclusively on the corresponding base screen. The
GLOBAL WINDOW SETUP is described here.
GLOBAL WINDOW
There are two options here: Use and Do Not Use. If you select Do Not Use,
ignore the items described below. Selecting Use makes these options available.
GLOBAL ACCESS WINDOW
Setup the Global REGISTRATION NO. and the WINDOW LOCATION as Direct
or Indirect values. When set as Direct, the REGISTRATION NO. and WIN-
DOW LOCATION selections are fixed to the values setup here. When set to
Indirect, the WINDOW REG. NO. word address, as prepared in the System
Area, is variable—which means it can have the REGISTRATION NO. written
to it—and as a result, multiple window screens can be used as Global
3. GLOBAL WINDOW SETUP
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Important
Reference