Allen-Bradley PLC-3

I/O Scanner Communications Module

Power Supply

Power Supply Module

Error Correcting Memory 16K Ram

Error Correcting Ram Memory 64K

CPU Module

Main Processor

Chassis Power Cable

PLC 3 Rack

PLC-3 Chassis

Multi-Output Power Supply

I/O Scanner Communications Module

I/O Scanner Message Handling

I/O Scanner Programmer Interface

1775MED
DISCONTINUED BY MANUFACTURER
MEMORY MODULE
ERROR CORRECTING
RAM 128K
PLC-3

Error Correcting Ram Memory 64K

1775LX
DISCONTINUED BY MANUFACTURER
COMMUNICATION ADAPTER MODULE
PLC-3 EXPANSION MODULE
5-15VDC
5AMP
80MA

Main Processor Module

Communication Adapter

1775GA
DISCONTINUED BY MANUFACTURER
COMMUNICATION MODULE
PERIPHERAL
PLC3