GE 90-30 PLC Series Installation And Hardware Manual page 121

5
Series 90-30 CPU Capacities
The following table describes the maximum capacities and operating features for the Series 90-30
PLC CPU models. For State Logic CPUs, see "System Specifications for Series 90-30 State Logic
CPUs" in Chapter 9.
Table 5-3. Series 90-30 CPU Capacities
CPU
Model
CPU311
CPU313
CPU323
CPU331
CPU340
CPU341
CPU350
CPU351
CPU352
CPU360
CPU363
CPU364
CPU374
1
Maximum of 160 combined I + O points.
2
Maximum of 320 combined I + O points.
3 Configurable from 128 to 32,640 words, in 128 word increments.
4 Depends on assigned values for configurable word memory (%R, %AQ, %AI). Maximum is 240K Bytes.
5 CPU352 and CPU374 have hardware-based floating point math. Other CPUs have firmware-based floating point math.
User Memory Addresses (References)
Data in the Series 90-30 PLC programs is referenced by its memory address. A reference indicates
the way that data is stored in the PLC. A reference specifies both a memory type and a precise
location (number) within that memory type. For example:
Difference Between a Memory Address and a Nickname
The % symbol is used to distinguish memory addresses from nicknames. For example, %I17 (or
%I000017) is a memory address. The similar term, I17 (it has no % sign), is viewed by the PLC as
a nickname and could be used with most memory addresses. For example, if you had a motor in
your plant called "Infeed No. 17," and it was commonly referred to as "I17" by the people in your
plant, you might wish to use I17 as the nickname for the output coil (%Q11) that turns on that
motor. You are allowed to do so because the PLC can distinguish between the nickname, I17 (your
nickname for memory address %Q11), and memory address %I17.
5-10 Series 90-30 PLC Installation and Hardware Manual – August 2002
Speed,
(MHz) Processor
10 80188
10 80188
10 80188
10 80188
20 80C188XL
20 80C188XL
25 80386EX
25 80386EX
25 80386EX
25 80386EX
25 80386EX
25 80386EX
133 586
%I00001 specifies address 1 in input memory.
%R00256 specifies address 256 in register memory.
Input Output Register
Points Points Memory
1 1
160 160 1K (Bytes)
1 1
160 160 2K (Bytes)
2 2
320 320 2K (Bytes)
512 512 4K (Bytes)
512 512 19.9K (Bytes)
512 512 19.9K (Bytes)
2048 2048 19.9K (Bytes)
2048 2048 Note 3
2048 2048 Note 3
2048 2048 Note 3
2048 2048 Note 3
2048 2048 Note 3
2048 2048 Note 3
User Program Floating
Memory Point
(Maximum) Math
6K (Bytes) no
12K (Bytes) no
12K (Bytes) no
16K (Bytes) no
32K (Bytes) no
80K (Bytes) no
32K (Bytes) yes
Note 4 yes
5
Note 4 yes
Note 4 yes
Note 4 yes
Note 4 yes
5
Note 4 yes
GFK-0356Q