Troubleshooting

Symptom	Possible Cause	Possible Solution
Modbus polling unresponsive (TCP/IP communication present)	Watchdog is enabled	Clear and disable the Watchdog using Modbus TCP or WinScript Live
Cannot control AMIO	IP Address is not set	Use DIP switches to reset IP address and set using DHCP or WinScript Live
Cannot ping AMIO	IP Address is not on the same network	Change your PC or show controller IP address to have the same first 3 octets as your AMIO

Removing the Watchdog

Removing the watchdog is recommended and can be done via WinScript Live if you're using our show controllers, or by sending an appropriate Modbus TCP command.

If you are using WinScript Live, the watchdog is automatically removed when you set the IP address. See AMIO with WinScript Live for more information.

By default, the watchdog will turn on after one minute of inactivity. Standard Modbus TCP I/O request/set communication will be unable to resume until the watchdog has been reset.

Reset the Watchdog

Send the following hex characters over TCP on port 502:

00 00 00 00 00 06 01 06 11 21 BE CF 00 00 00 00 00 06 01 06 11 21 AF FE

Disable the Watchdog

Send the following hex characters over TCP on port 502:

00 00 00 00 00 06 01 06 11 20 00 00