AMIKON Industrial Supply · Control & Communication TRICONEX / 4351B Triconex 4351B Communication for Tricon Safety Control Systems For maintenance teams sourcing a communication module, confirm the installed controller version, the required interface type and the communication paths used by the existing system before requesting a replacement. Technical Specifications 4351B Model Identification The 4351B is a Tricon Communication Module (TCM) with copper Ethernet interfaces.