ModSim32 is a very simple but powerful application for simulating data from modbus slave devices. ModSim is an MDI application which allows you to define multiple blocks of data points which may then be accessed from a connected modbus master. Each document opened within ModSim may be configured to represent data from the same or different slave node thereby providing simulation for an entire group of devices. Useful for complience testing of new master designs or as a quick simulation of a process. Additional functionality is available with ModSim32 which supports network connections as well as OLE Automation support which places the simulator under the control of custom Visual Basic or ExCel spreadsheet applications. The CE version of ModSim provides many of the same features as ModSim32 but is designed specifically for the PocketPC