Chapter 3. CPU Configuration
GFK-2222AD
April 2018
121
Memory Allocation Configuration
Memory Parameters
Reference Points
%I Discrete Input, %Q Discrete
Output, %M Internal Discrete, %S
System, %SA System, %SB System,
%SC System, %T Temporary Status,
%G Genius Global
The upper limit for the range of each of these memory types. Read only.
Total Reference Points
Read only. Calculated by the programming software.
Reference Words
%AI Analog Input
Valid range: 0 through 32,640 words.
Default: 64
%AQ Analog Output
Valid range: 0 through 32,640 words.
Default: 64
%R Register Memory
Valid range: 0 through 32,640 words.
Default: 1024.
%W Bulk Memory
Valid range: 0 through maximum available user RAM.
Increments of 2048 words.
Default: 0.
Total Reference Words
Read only. Calculated by the programming software.
Managed Memory
Symbolic Discrete (Bits)
The configured number of bits reserved for symbolic discrete variables.
Valid range: 0 through 83,886,080 in increments of 32768 bits.
Default: 32,768.
Symbolic Non-Discrete (Words)
The configured number of 16-bit register memory locations reserved for
symbolic non-discrete variables.
Valid range: 0 through 5,242,880 in increments of 2048 words.
Default: 65,536.
I/O Discrete (Bits)
The configured number of bits reserved for discrete IO variables.
Valid range: 0 through 83,886,080 in increments of 32768 bits.
Default: 0
For RSTi-EP CPE100
/
CPE115:
Valid range: 0 through 4096 in increments of 2048 bits.
Default: 0
I/O Non-Discrete (Words)
The configured number of 16-bit register memory locations reserved for
non-discrete IO variables.
Valid range: 0 through 5,242,880 in increments of 2048 words.
Default: 0
Total Managed Memory Required
(Bytes)
Read only. See
Calculation of Memory Required for Managed Memory
Total User Memory Required
(Bytes)
Read only. See
