User Reference Size And Default; G User References And Cpu Memory Locations - GE PACSystems RX7i Cpu Programmer's Reference Manual

Chapter 3. Program Data

3.3 User Reference Size and Default

Maximum user references and default reference sizes are listed in the table below.
Item
Reference Points
%I reference
%Q reference
%M reference
%S total (S, SA, SB, SC)
%T reference
%G
Total Reference Points
Reference Words
%AI reference
%AQ reference
%R, 1K word increments 0—32640 words
%W
Total Reference Words
%L (per block)
%P (per program)
Managed Memory
Symbolic Discrete
Symbolic Non-Discrete
I/O Discrete
I/O Non-Discrete
Total Symbolic
3.3.1

%G User References and CPU Memory Locations

The CPU contains one data space for all of the global data references (%G). The internal CPU memory
for this data is 7680 bits long. For Series 90-70 systems, the programming software subdivides this
range using %G, %GA, %GB, %GC, %GD, and %GE prefixes—allowing each of these prefixes to be
used with bit offsets in the range 1–1280. For PACSystems, these ranges are converted to %G.
40 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual
Range
32768 bits
32768 bits
32768 bits
512 bits
(128 each)
1024 bits
7680 points
107520
0—32640 words
0—32640 words
0—maximum available user RAM
0—maximum available user RAM
8192 words
8192 words
0—83,886,080 (bits)
0—5,242,880 (words)
0 through 83,886,080
0 through 5,242,880.
0—42,088,704 bytes
(This is the total memory available for the combined total of
symbolic memory. This also includes other user memory use,
program etc.)
Default
32768 bits
32768 bits
32768 bits
512 bits
(128 each)
1024 bits
7680 points
107520
64 words
64 words
1024 words
0 words
1152 words
8192 words
8192 words
32768
65536
0
0
143360
GFK-2950C