# Modbus RTU driver missing after power failure

**URL:** <https://forum.inductiveautomation.com/t/modbus-rtu-driver-missing-after-power-failure/56533>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [February 24, 2022, 8:12pm UTC](https://forum.inductiveautomation.com/t/modbus-rtu-driver-missing-after-power-failure/56533 "2022-02-24T20:12:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jorge.galvez](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jorge.galvez](https://forum.inductiveautomation.com/u/jorge.galvez)\
**Post date:** [February 24, 2022, 8:12pm UTC](https://forum.inductiveautomation.com/t/modbus-rtu-driver-missing-after-power-failure/56533/1 "2022-02-24T20:12:07Z")

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Hello. After a power failure, the Modbus RTU driver of my gateway disappeared and also the device which used it. Now when trying to create a new modbus RTU device, the gateway doesn’t show the RTU driver. Any piece of advice please?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 24, 2022, 8:57pm UTC](https://forum.inductiveautomation.com/t/modbus-rtu-driver-missing-after-power-failure/56533/2 "2022-02-24T20:57:00Z")

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Make sure the serial support module file is still installed. Look in “Configuration” =\> “Modules” in the gateway interface.

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<div class="post-metadata">

**Author:** ![jorge.galvez](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jorge.galvez](https://forum.inductiveautomation.com/u/jorge.galvez)\
**Post date:** [February 24, 2022, 10:24pm UTC](https://forum.inductiveautomation.com/t/modbus-rtu-driver-missing-after-power-failure/56533/3 "2022-02-24T22:24:33Z")

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Thanks a lot! I installed the Modbus driver again and the device appeared! Maybe during the power fail some of it’s files were corrupted.