IC697PCM711 Programmable Coprocessor Module

The IC697PCM711 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 communications functions. It communicates with the PLC CPU over the backplane and can access user and system data using extensions to the powerful MegaBasic language. 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 expansion 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.

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 expansion 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.

Programming and Configuration：

An IC647 or IC640 computer, or IBM-compatible PC, XT, or AT computer with PCM Development Software installed is connected to the top port of the PCM. The default setting is 19,200 bps. The PCM Development Software is used to configure the serial port parameters, to define the interface to the PLC CPU, to select task functions and to program MegaBasic applications. The PCM parameters can also be configured using MS-DOS
or Windows
programming software. Consult reference 3 for details of operation.

Status Indication：

Three Status LEDs are available as shown in Figure 2. The top LED indicates the condition of the module, the bottom two LEDs may be assigned to a configured function.

Controls：

One pushbutton is provided. Push and hold for less than 5 seconds will restart an application. Push and hold for more than 5 seconds and the module factory default configuration will be installed (this action will not clear memory but will permit communication with the programmer using factory default settings).

Batteries：

A lithium battery (IC697ACC701) is installed as shown in figure 2. This battery maintains user memory when power is removed. Be sure to install the new battery before removing the old battery. If during power-up diagnostics a low battery is detected the Module OK LED (top) will not stay on. 

Ordering Information：

To avail our best deals for IC697PCM711, contact us and we will get back to you within 24 hours.