GE Fanuc IC697CPU771 Expandable CPU

Functions of CPU 771

The CPU 771 serves as a pivotal component within a PLC system, offering essential functions for real-time control of various industrial processes and systems. Here are the key functions summarized:

Real-Time Control:

• The CPU 771 is designed as a single-slot PLC CPU, capable of executing real-time control tasks within machines, processes, and material handling systems.

Programming and Configuration:

• Programmed and configured using MS-DOS or Windows-based programming software, enabling users to define control logic and configure system parameters according to specific application requirements.

Communication with Modules:

• Facilitates communication with I/O modules and smart option modules installed within the system via the rack-mounted backplane (e.g., IC697CHS750, 782, 783, 790, 791), utilizing the VME C.1 Standard format.

Supported Option Modules:

• Compatible with various option modules, including:
  • All IC697 LAN interface modules, facilitating network connectivity.
  • Several Coprocessor modules, enhancing computational capabilities.
  • Bus Controller for IC660/661 I/O and Communications modules, enabling integration with additional I/O devices and communication networks.
  • The entire IC697 family of discrete and analog I/O modules, offering extensive input/output capabilities for interfacing with field devices.

Features of the CPU:

• Single Slot CPU: Occupies only one slot within the PLC system, maximizing space efficiency.

• 2K Inputs and Outputs: Provides a total of 2,000 inputs and outputs, allowing for versatile configuration.

• Up to 8K Analog I/O: Supports analog input and output functionality, with a maximum capacity of 8,000 points.

• Fast Boolean Function Processing: Achieves a processing speed of 0.4 microseconds per boolean function, ensuring swift execution of logic.

• 12 Mhz, 80C186 Microprocessor: Powered by a high-performance microprocessor for efficient operation.

• Compatibility with IC660/IC661 and IC697 PLC: Compatible with IC660/IC661 and IC697 PLC modules, offering flexibility in system configuration.

• Programmable via MS-DOS or Windows-Based Software: Programmable using MS-DOS or Windows-based software products, enabling convenient programming and configuration.

• Support for Ethernet TCP/IP or SNP Port: Supports communication over Ethernet TCP/IP or through the SNP port, facilitating network connectivity.

• Expandable Memory: Supports up to 512 Kbytes of battery-backed expansion memory in the same slot, providing ample storage capacity.

• Configurable Data and Program Memory: Allows for flexible configuration of data and program memory according to application requirements.

• Battery-Backed Calendar Clock: Equipped with a battery-backed calendar clock for accurate timekeeping.

• Operation Mode Switch: Features a three-position operation mode switch for easy configuration.

• Password-Controlled Access: Ensures security with password-controlled access to the CPU.

• Status LEDs: Includes three status LEDs for monitoring system status and diagnostics.

• Software Configuration: Configurable via software, eliminating the need for DIP switches or jumpers.

• Reference Information Inside Front Door: Provides reference information conveniently located inside the front door for easy access.

Specifications for IC697CPU771:

Battery:

• Shelf Life: 10 years at 20°C (68°F).
• Memory Retention: 6 months nominal without applied power.
• Current Required from 5V Bus: 1.1 Amps with Expansion Memory (all sizes); 1.2 Amps.

Time of Day Clock:

• Accuracy: ±3.5 seconds per day maximum.

Elapsed Time Clock (Internal Timing):

• Accuracy: ±0.01% maximum.

Serial Port:

• RS422 Compatible Serial Connection: Supports connection to programmer.

VME System:

• VME Standard C.1: Designed to support the VME standard C.1.