GE FANUC IC697CPM790 PLC CPUs

GE FANUC IC697CPM790 PLC CPUs

Features

Single slot CPU

Provides 1 Mbyte of battery-backed memory in the

same slot (up to 512 Kbytes available for use by

ladder diagram application program)

Supports floating point calculations

Up to 12K discrete inputs and outputs (any mix -

simplex mode only); 2048 voted discrete inputs, 2048

voted discrete outputs

Up to 8K analog inputs (simplex mode only) and

8K analog outputs (simplex mode only); 1024 voted

analog inputs

0.4 microseconds per boolean function

64 MHz, 80486DX2 microprocessor

Supports IC660/IC661 I/O (and IC697 I/O in simplex mode only)

Programmed by MS-DOS, or Windows software

products running on Windows 95 or Windows

NT over Ethernet TCP/IP or through the SNP

port.

Configurable data and program memory

Battery-backed calendar clock

Three position operation mode switch

Password controlled access

Remote programmer keyswitch memory

protection

Four status LEDs

Software configuration (No DIP switches

or jumpers)

Reference information inside front door

In-system upgradable firmware

Functions

The CPM 790 is a single slot programmable controller

CPU which allows floating point calculations. The CPM

790 is programmed and configured with MS-DOS or

Windows based programming software for use in

Emergency Shut-Down (ESD), fire and gas, and other

critical control applications. It communicates with I/O

and smart option modules over the rack mounted

backplane (IC697CHS750. 782. 783. 790. 791) by way of

the VME C.1 Standard format.

The CPM 790 must be used in conjunction with a

Standalone C program which provides Triple Modular

Redundancy (TMR) operating and autotest routines. It

will not operate unless this program is included in the

loaded application program.

For detailed information on TMR systems, see

Reference 4. the IC66* Modular Redundancy Flexible

Triple Modular Redundant (TMR) System User’s Manual.

Supported option modules include IC697 LAN Interface

modules, Programmable Coprocessor, Alphanumeric

Display Coprocessor, Bus Controller for IC660/661 I/O

products, Communications modules, I/O Link Interface,

and all of the IC697 family of discrete and analog I/O

modules.

Figure 1. Typical GMR System Configuration

User Memory

Program and data memory for the CPM 790 is provided

by a memory board with 1 Mbyte of battery-backed

CMOS RAM. 512 Kbytes of this memory is available for the

user’s application program and data. This memory board is

an integral part of the CPM 790 module and is included

with the module.

Flash Memory

This module uses flash memory for storage of the

operating system firmware (this module does not support storage of user program in the flash memory). This

allows updates of the firmware without disassembling the module or replacing EPROMs. The operating system firmware is updated by connecting a

PC compatible computer to the module’s serial port

and running the Loader software included with the

firmware floppy disk.

Operation, Protection, and Module Status

Operation of this module can be controlled by the

three-position RUN/STOP switch or remotely by an

attached programmer and programming software.

Program and configuration data can be locked

through software passwords or manually by the

memory protect keyswitch. When the key is in the

protected position, program and configuration data can

only be changed by a programmer connected parallel

only (to the Bus Transmitter module). The status of a

CPU is indicated by the four green LEDs on the front

of the module.

Operating Temperature

The CPM 790 requires forced air cooling for proper

operation in ambient temperatures greater than 40
C

(104
F). A fan capable of 70 CFM (including filters)

should be located beneath slot 1 of the rack containing

the CPU.

Fan assemblies (IC697ACC721. IC697ACC724. and

IC697ACC744) can be ordered for direct mounting on

the IC697 rack. Refer to the applicable Programmable

Controller Installation Manual for detailed information.

Installation

It is the responsibility of the OEM, system integrator, or

end user to properly install the PLC equipment for safe

and reliable operation. Product manuals provide

detailed information about installation, startu

shipped with the PLC programming software, for

additional guidelines.

Installation should not be attempted without referring to the applicable Programmable Controller Installa- tion Manual.

Connect the battery to either of the battery connectors on the module (see Figure 2).

Put the toggle switch in the STOP position.

Put the keyswitch in the Memory Protection OFF position.

Make sure that rack power is off.

Install the CPM 790 module in slot 1 of rack 0.

Turn on power.

The module should power up and the top LED should

blink. When the diagnostics have completed

successfully, the top LED stays on and the second and

third LEDs are off. The fourth LED is off if the

keyswitch is in the OFF position. The CPU is now

ready to be programmed (if connected parallel, the CPU

can be programmed regardless of key position). After

the program has been verified the toggle switch can be

moved to the appropriate operation mode position.

The LEDs indicate the position of the toggle switch,

memory protection status, and the state of the program.

Programmer Connection, Parallel

For a parallel interface (MS-DOS programmer only) the

programmer is connected to the top port on the Bus

Transmitter Module (IC697BEM713). Consult Reference

1 for a description of programming functions.