
4. Advanced Conguration
Your TapNPass can be congured to:
ŸRequire login for access to features or data
ŸOpen an HMI app that you created for your systems or your
user
The IoTize Studio conguration envronment, detailed
documentation, application notes and app development
resources are available online at:
http://docs.iotize.com/GettingStarted/TapNPass/
5. Troubleshooting
App won’t display any register values
If Tap Toolbox Modbus utility does not display any values from
your Modbus slave, verify that:
ŸConnection cord is plugged into TapNPass and the target.
ŸConnection cord pin out is correct for your target. The
problem may be caused by inverted D0 and D1 signals.
To comply with the Modbus specication, TapNPass uses an
RJ45-RJ45 cord with a specic pin specication. Try this
cord rst.
If the provided cord does not work, you can also try an
Ethernet cord with the standard pin out.
If neither cord works, you will have to verify the pin
connections on the target and may have to adapt a cord to
your target’s pin out.
ŸThe UART settings are appropriate for the target.
ŸThe slave address is correct for the target.
ŸYou have access to the Modbus features in the current
TapNPass conguration. For a new TapNPass, the initial
conguration allows access without login for Modbus and
Terminal features. If the conguration has been changed,
you will have to obtain the login from the conguration
project or the user who congure the TapNPass.