General Cpu Features; Microprocessor; Cpu Serial Port (Connector On Power Supply) - GE 90-30 PLC Series Installation And Hardware Manual

Memory Backup
Warning Label
Figure 5-2. IC693CHS397 5-Slot Modular CPU Baseplate

General CPU Features

Microprocessor

The microprocessor type varies by the CPU model:
The microprocessor provides all fundamental sweep and operation control, and execution of all
non-boolean (as used here, the term boolean refers to discrete logic such as contacts and coils)
functions. Boolean functions in the modular CPUs are handled by a dedicated VLSI (Very Large
Scale Integration) Instruction Sequencer Coprocessor (ISCP). All Series 90-30 CPUs use RAM
working memory.

CPU Serial Port (Connector on Power Supply)

A 15-pin D-type female connector, accessed by opening the hinged door on the right front of the
power supply, provides the connection to a CPU serial port which is used to connect to:
GFK-0356Q Chapter 5 CPUs
PROGRAMMABLE
CONTROLLER
BASE 5-SLOT
CAUTION
USER PROGRAM
AND REGISTER
VALUES MAY BE
LOST IF POWER
SUPPLY IS
REMOVED FOR
LONGER THAN
1 HOUR
CPU/1
POWER
SUPPLY
80188 microprocessor for CPU models 311/313/323/331
80C188XL microprocessor for CPU models 340/341
80386EX microprocessor for CPU models 350-364
586 microprocessor for CPU model 374
a programmer (usually a personal computer) running GE PLC programming software.
The IC690ACC901 Miniconverter/cable kit is a convenient way to access this port. See
Appendix D for details.
the IC693PRG300 GE Hand-Held Programmer (CPU374 does not support the HHP.)
See Chapter 11 for details.
the IC200ACC003 EZ Program Store device. See GFK-1811 for details. (CPU374 only)
other serial devices.
NON-CPU SLOTS
C
P
U
I/O-2 I/O-3 I/O-4 I/O-5
CPU Slot (Slot 1)
E
X
P
A
N I/O Bus
S
Expansion
I
Connector
O
N
5
5-3