EMERSON IC697CMM711 Communications Coprocessor Module

The Communications Coprocessor Module (CMM) is a member of a family of communication modules, and provides both communications control (CCM), remote terminal (RTU), and general IC69* communications (SNP) functionality. CCM, RTU and SNP are available on either or both serial ports in any of nine possible configurations: CCM/CCM, CCM/RTU, RTU/CCM, RTU/RTU, SNP/SNP, SNP/CCM, CCM/SNP, SNP/RTU, and RTU/SNP. The CMM provides both the RS-232 and RS-485 Interfaces and communicates with the PLC CPU over the backplane.