GE IC697BEM761 Bus Expansion Module

Benefits

Connects IC697 I/O modules to the I/O bus of IC600 programmable controllers

Rack-dependent I/O reference Supports up to eight racks per I/O system

Function

The I/O Interface Module to the IC600 Programmable Controller provides the interface between the IC600 I/O bus and the IC697 I/O module.

The I/O Interface Module is mounted on the IC697 chassis and has two 37-pin connectors identical to those on the IC600 I/O Receiver for interconnection to the IC600 I/O bus.

The IC600 PLC system can be configured to include IC600 I/O, IC697 I/O, and IC660 I/O. The IC600 and IC697 I/O racks can be included in one I/O chain.

Each IC697 I/O rack can be assigned 128 (five-slot rack) or 256 (nine-slot rack) I/O reference points.

Up to eight of these racks can be used in a system, providing up to 2000 addressable points.

Addressable points. Any point can be used for input or output.

A minimum of 8K registers are required in the IC600 PLC for the I/O interface module to operate.

Module Operation

The I/O Interface Module is an intelligent module that allows the IC697 I/O Rack to interface with the IC600 I/O Link Port.

In operation, the I/O Interface Module reads/writes data from each I/O module in the rack. It exchanges data with the IC600 CPU via the I/O bus.

An I/O chain can include up to eight IC697 I/O racks as well as other IC600 racks.

Each IC697 rack has nine or five slots, one for I/O interface modules and eight or four for I/O modules.

While the IC697 I/O modules themselves may have 16 or 32 points.

While the IC697 I/O modules themselves may have 16 or 32 points, each of the eight available I/O slots in the IC697 chassis is allocated 32 discrete points.

Therefore, a nine-slot rack filled with 32-point modules will have 256 points (128 points for a five-slot rack).

The maximum system capacity is 2000 points (896 points for a five-slot rack).

Table 1 shows the I/O mapping by rack and slot.

I/O interface modules must be plugged into slot 1 (next to the power supply slot), with slots 2 through 9 reserved for I/O modules.

Setting the Rack Number

The rack number is set by a jumper on the backplane behind the power supply. To set the jumper position, the sum of the digits of the jumper in the ‘1’ position is the desired rack number.

For example, for rack number 2. the 2 jumper is in the 1 position and the 1. 4. and 8 jumpers are in the 2 position.

Reserved I/O Reference Addresses

Each IC697 rack uses a reserved I/O reference address (as shown in Table 2) as part of the communication scheme with the IC600 CPU.

This reserved I/O reference address should not be used to address IC600 I/O or IC660 I/O if the corresponding IC697 chassis is being used.