Hi, I just set up OpenAPC and was running a test project with some success.  I have a low cost modbus controller connected to my Windows 7 PC via serial USB.  Most software platforms that support modbus allow some modification of the type of data that is expected back from the modbus device:  floating point vs 16 bit integer at a minimum.  My device only supports 16 bit integer as many low cost modbus devices do.
Is there a way to specify or adjust for this with the Modbus control? 
Thanks in advance.