We have released a beta version of our Emulation module. The Emulation module adds a tool that enables communication between FlexSim and OPC / Modbus Servers and PLCs. Help files are included in the FlexSim User Manual to assist you. This beta version must be installed with FlexSim 2017 Update 1. 32-bit and 64-bit installers can be downloaded through the downloads section in the Modules tab of the FlexSim website: FlexSim Downloads The following are known issues: Asynchronous Write for OPC Connections is not working. The option has been disabled. Please post any feedback or bug reports either as a comment to this article or you can email them to dev@flexsim.com