GE Series 90-30 PLC

5-10 Series 90-30 PLC Installation and Hardware Manual – August 2002 GFK-0356Q
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
Speed,
(MHz) Processor
Input
Points
Output
Points
Register
Memory
User Program
Memory
(Maximum)
Floating
Point
Math
CPU311 10 80188 160
1
160
1
1K (Bytes) 6K (Bytes) no
CPU313 10 80188 160
1
160
1
2K (Bytes) 12K (Bytes) no
CPU323 10 80188 320
2
320
2
2K (Bytes) 12K (Bytes) no
CPU331 10 80188 512 512 4K (Bytes) 16K (Bytes) no
CPU340 20 80C188XL 512 512 19.9K (Bytes) 32K (Bytes) no
CPU341 20 80C188XL 512 512 19.9K (Bytes) 80K (Bytes) no
CPU350 25 80386EX 2048 2048 19.9K (Bytes) 32K (Bytes) yes
CPU351 25 80386EX 2048 2048 Note 3 Note 4 yes
CPU352 25 80386EX 2048 2048 Note 3 Note 4 yes
5
CPU360 25 80386EX 2048 2048 Note 3 Note 4 yes
CPU363 25 80386EX 2048 2048 Note 3 Note 4 yes
CPU364 25 80386EX 2048 2048 Note 3 Note 4 yes
CPU374 133 586 2048 2048 Note 3 Note 4 yes
5
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:
%I00001 specifies address 1 in input memory.
%R00256 specifies address 256 in register memory.
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.