The MVI56E communication module allows for modbus master and/or slave connectivity from Rockwell Automation® ControlLogix® processors to modbus RTU or ASCII devices. Each MVI56E port can be configured as a master or slave. The MVI56E-MCM and MVI56E-MCMXT act as input or output modules on the ControlLogix backplane, making modbus data appear as input or output data to the processor. Two independently configurable serial ports can operate on the same or different modbus networks. The MVI56E-MCM is designed for standard process applications and the MVI56E-MCMXT is designed for the Logix-XT™ control platform, allowing it to operate in extreme environments. It can tolerate higher operating temperatures and has conformal coating to protect it from harsh or caustic conditions.