modbus 485/ flexgrid application

I need an application written in vb6 that can access 10 modbus speaking devices over a serial rs 485 network and input the values of various scattered memory addresses into 2 flexgrids. once a day the contents of the flexgrids will be written to a file. There will be a configuration form for the serial modbus. there will be an alarm configuration form to set some alarm trigger points from the flexgrid values ## Deliverables Complete source code of all programming work done