Modbus Address
This Address field in the App is in the Modbus Protocol format and not in the more commonly PLC address scheme.  There is good and bad in providing Protocol Address range. The good part is that full 16-bit protocol range is supported ( 0 to 65535).  The bad part is that address translation is needed from more commonly used PLC format.  The table below should help for novice users. (MMA = Modbus Monitor Advanced)