GE IC697PCM711 Programmable Coprocessor Module

Features

• Single slot Coprocessor

• Dual Tasking

• MegaBasic

• CCM2 Protocol

• 12 Mhz, 80C186 microprocessor

• 90% of an IBM AT performance

• Up to 96 Kbytes battery-backed CMOS logic and

data memory on board

• Supports up to 512 Kbytes optional expansion memory

• Programmed by IC647. IC640 or IBM-compatible

Personal Computer

• Two RS-422/RS-485 or RS-232 serial ports

• High performance access to PLC memory

• Real time calendar clock synchronized to PLC

• Reset pushbutton

• Three Status LEDs

• Soft Configuration (No dip switches or jumpers)

with MS-DOS or Windows based programming

software configuration function

• Simultaneous communications on both ports at up

to 9.6 Kbaud, or up to 19.2 Kbaud individually.

Functions

The Programmable Coprocessor Module (PCM) is a

Coprocessor to the PLC CPU.  It can be programmed

to perform operator interface, real time computations,

data storage, data acquisition and data communica

tions functions.  It communicates with the PLC CPU

over the backplane and can access user and system

data using extensions to the powerful MegaBasic lan

guage.  No application program support is required in

the PLC CPU.

Many PCMs can be supported in a single IC697 PLC

system and each can accommodate an optional ex

pansion memory up to 512 Kbytes.

Dual tasking allows running a MegaBasic program at

the same time the PCM is used as a communications

interface.  Operation of the module may be initialized

by a pushbutton or by an attached PCM development

system.  The status of the PCM is indicated by three

green LEDs on the front of the module.

Installation

• Installation should not be attempted without refer

ring to the applicable Programmable Controller

Installation Manual (see reference 5).

• Make sure rack power is off.

• Install expansion memory if required.

• Connect the battery to either of the battery con

nectors on the module. (See figure 2)

• Install in the rack. (See figure 1)

• Turn on power.

The module should power up and blink the top LED.

When the diagnostics have completed successfully the

top LED stays on.

Expansion Memory

The PCM can operate with or without an expansion

memory daughter board.  The base memory on the

PCM board has up to 95 Kbytes user memory.  The ex

pansion memory daughter board permits expansion of

program/data memory by 64. 128. 256 or 512 Kbytes.

The battery which supports this memory is located on

the base board housing as shown in figure 2.