GE IC687BEM713是一个冗余通信模块，它被广泛应用于热备CPU冗余系统中，其主要功能是同步安装在该系统中的CPU。该模块使用备份单元中的现有数据来执行此操作，并允许在两个单元之间传输共享I/O数据的路径。GE IC687RCM711需要1.2安培的电流，并配有5个LED指示灯和一个按钮。此外，它的使用可以保证在系统中的CPU出现故障时，备份单元能够接管并维持系统的正常运行。

GE IC687RCM711 is a redundant communication module widely used in hot standby CPU redundancy systems. Its main function is to synchronize the CPUs installed in the system. This module uses existing data from the backup unit to perform this operation and allows for the transfer of shared I/O data paths between the two units. GE IC687RCM711 requires a current of 1.2 amperes and is equipped with 5 LED indicator lights and a button. In addition, its use can ensure that in the event of a CPU failure in the system, the backup unit can take over and maintain the normal operation of the system.