ModbusTCP Test Client

This app allows you specify an IP address or host name, optionally a port and/or slave address and/or register address.
The test once started will attempt to connect to the ModbusTCP device and send requests for function codes 1, 2, 3 and 4.
If any tests respond correctly then the test for that function code is stopped and noted.
Once all function codes are responded to correctly the test is stopped.
The default port of 502 is used if one is not specified.If no slave address is specified then addresses from 0 to 255 are scanned.
If no register address is specified then addresses from 0 to 65535 are scanned.