GE 90-30 PLC Series Installation And Hardware Manual page 122

User Memory Reference Types
The user references referred to in the following tables are explained in the Series 90-30 PLC CPU
Instruction Set Reference Manual, GFK-0467.
Table 5-4. Range and Size of User References for CPU Models 311-341
Reference (Memory) Type
User program logic
Discrete inputs
Discrete outputs
Discrete globals
Internal coils
Temporary coils
System status references
System register references
Analog inputs
Analog outputs
System registers**
* 160 physical I/O maximum with 16 point modules installed; 320 maximum with 32 point modules installed.
** May be viewed only with a Hand-Held Programmer (see the Hand-Held Programmer User's Manual, GFK-0402) ; may not be
referenced in a user's logic program.
GFK-0356Q Chapter 5 CPUs
Model 311/313/323
Reference Range Size
Not applicable 6K bytes
%I0001 – %I0320* 512 bits
%Q0001 – %Q0320 * 512 bits
%G0001 – %G1280 1280 bits
%M0001 – %M1024 1024 bits
%T0001 – %T0256 256 bits
%S0001 – %S0032 32 bits
%SA001 – %SA032 32 bits
%SB001 – %SB032 32 bits
%SC001 – %SC032 32 bits
%R0001 – %R0512 (311) 512 words
%R0001 – %R1024 (313) 1024 words
%AI001 – %AI064 64 words
%AQ001 – %AQ032 32 words
%SR001 – %SR016 16 words
Model 331/340/341
Reference Range
Not applicable CPU331: 16K bytes
CPU340: 32K bytes
CPU341: 80K bytes
%I0001 – %I0512 512 bits
%Q0001 – %Q0512 512 bits
%G0001 – %G1280 1280 bits
%M0001 – %M1024 1024 Bits
%T0001 – %T0256 256 bits
%S0001 – %S0032 32 bits
%SA0001 – %SA0032 32 bits
%SB0001 – %SB0032 32 bits
%SC0001 – %SC0032 32 bits
%R0001 – %R2048 2K words (331)
%R0001 – %R9999 9999 words (340/341)
%AI0001 – %AI0128 128 words (331)
%AI0001 – %AI1024 1024 words (340/341)
%AQ001 – %AQ064 64 words (331)
%AQ001 – %AQ256 256 words (340/341)
%SR001 – %SR016 16 words
5
Size
5-11