# Modbus Driver Diagnostics Is Connected Bit

**URL:** <https://forum.inductiveautomation.com/t/modbus-driver-diagnostics-is-connected-bit/92684>\
**Category:** Ignition\
**Created:** [July 2, 2024, 1:58pm UTC](https://forum.inductiveautomation.com/t/modbus-driver-diagnostics-is-connected-bit/92684 "2024-07-02T13:58:02Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![dion.botha](https://avatars.discourse-cdn.com/v4/letter/d/46a35a/32.png) [@dion.botha](https://forum.inductiveautomation.com/u/dion.botha)\
**Post date:** [July 2, 2024, 1:58pm UTC](https://forum.inductiveautomation.com/t/modbus-driver-diagnostics-is-connected-bit/92684/1 "2024-07-02T13:58:03Z")

</div>

Today I noticed that the 'Is Connected' Modbus diagnostic tag stays true if you disable the driver connection in the gateway. I would think this tag should turn off under this condition - just my opinion.

---

<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 2, 2024, 2:50pm UTC](https://forum.inductiveautomation.com/t/modbus-driver-diagnostics-is-connected-bit/92684/2 "2024-07-02T14:50:45Z")

</div>

Doesn't the quality go bad?

---

<div class="post-metadata">

**Author:** ![dion.botha](https://avatars.discourse-cdn.com/v4/letter/d/46a35a/32.png) [@dion.botha](https://forum.inductiveautomation.com/u/dion.botha)\
**Post date:** [July 2, 2024, 5:01pm UTC](https://forum.inductiveautomation.com/t/modbus-driver-diagnostics-is-connected-bit/92684/3 "2024-07-02T17:01:18Z")

</div>

Yes, quality goes to 'Uncertain\_LastKnownValue("Whatever was updating this value has stopped doing so.")'. I guess I could create another tag that is only true if Is Connected value is true and quality is 'Good'. Thanks!