![Modbus-RTU I/O Modules](https://d27wgn5g4t3wja.cloudfront.net/img/13124130-cc3b-457c-a46c-16351a7e21a7/242803.png)
Modbus-RTU I/O Modules
Sophisticated watchdog timer functions allow the application to define the module's failsafe output state. The watchdog timer invokes the failsafe condition when communication between the host and module exceed a duration specified by the application. For further security, a second hardware watchdog timer monitors the microcontroller for failed operations or a "lock-up" condition and automaticaly resets the unit.