# SLC Driver - 'Connected:Determining Protocol'

**URL:** <https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332>\
**Category:** Ignition\
**Created:** [February 17, 2020, 2:57pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332 "2020-02-17T14:57:26Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![cody.abbott](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cody.abbott/32/17533_2.png) [@cody.abbott](https://forum.inductiveautomation.com/u/cody.abbott)\
**Post date:** [February 17, 2020, 2:57pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/1 "2020-02-17T14:57:26Z")

</div>

I have a bunch of SLC 5/04s that I am talking to via ANC-100e DH+ to Ethernet converters and the built in Ethernet SLC driver. It all works great, but if the devices are powered off (say for a weekend) and then come back online, the drivers do not automatically reconnect. I just see that the status is stuck on ‘Connected:Determining Protocol’. If i disable/ enable the driver, then it connects just fine.

---

<div class="post-metadata">

**Author:** ![cody.abbott](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cody.abbott/32/17533_2.png) [@cody.abbott](https://forum.inductiveautomation.com/u/cody.abbott)\
**Post date:** [February 24, 2020, 3:34pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/2 "2020-02-24T15:34:13Z")

</div>

Is there a way to enable and disable OPC-UA drivers from a script? Maybe I can just write a gateway script that automatically disables/enables the nodes that aren’t connected as a workaround.

---

<div class="post-metadata">

**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, 2020, 3:37pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/3 "2020-02-24T15:37:11Z")

</div>

> [@cody.abbott](#):
>
> Is there a way to enable and disable OPC-UA drivers from a script?

Driver? No. If you meant _ **device** _, yes:

[https://docs.inductiveautomation.com/display/DOC80/system.device.setDeviceEnabled](https://docs.inductiveautomation.com/display/DOC80/system.device.setDeviceEnabled)

---

<div class="post-metadata">

**Author:** ![cody.abbott](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cody.abbott/32/17533_2.png) [@cody.abbott](https://forum.inductiveautomation.com/u/cody.abbott)\
**Post date:** [February 24, 2020, 4:02pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/4 "2020-02-24T16:02:01Z")

</div>

Yep, that is what I meant. I’ll give this a try. I wonder if I need to wait at all between disabling the device and enabling it again?

---

<div class="post-metadata">

**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, 2020, 4:42pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/5 "2020-02-24T16:42:32Z")

</div>

> [@cody.abbott](#):
>
> I wonder if I need to wait

I wouldn't think so.

---

<div class="post-metadata">

**Author:** ![cody.abbott](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cody.abbott/32/17533_2.png) [@cody.abbott](https://forum.inductiveautomation.com/u/cody.abbott)\
**Post date:** [February 24, 2020, 4:44pm UTC](https://forum.inductiveautomation.com/t/slc-driver-connected-determining-protocol/32332/6 "2020-02-24T16:44:05Z")

</div>

Cool. Thanks so much!