# Modbus connection toggling between connected/disconnected

**URL:** <https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041>\
**Category:** Ignition\
**Created:** [September 5, 2019, 2:45pm UTC](https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041 "2019-09-05T14:45:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jpark](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jpark](https://forum.inductiveautomation.com/u/jpark)\
**Post date:** [September 5, 2019, 2:45pm UTC](https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041/1 "2019-09-05T14:45:56Z")

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7.9.12

I am not sure if this was happening before I upgraded from 7.9.6

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/3/37fcc44b6863e8eb1d214730eff241b1241d3603.png)

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**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:** [September 5, 2019, 3:03pm UTC](https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041/2 "2019-09-05T15:03:56Z")

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It’s being closed by the device.

Do you have any tags subscribed, and if so, at what rate?

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<div class="post-metadata">

**Author:** ![jpark](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jpark](https://forum.inductiveautomation.com/u/jpark)\
**Post date:** [September 5, 2019, 3:09pm UTC](https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041/3 "2019-09-05T15:09:35Z")

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About 100 tags at 10 second scan rate.

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<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:** [September 5, 2019, 3:11pm UTC](https://forum.inductiveautomation.com/t/modbus-connection-toggling-between-connected-disconnected/28041/4 "2019-09-05T15:11:32Z")

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Hmm. Maybe try 1 tag at 5 seconds or something. Most Modbus devices will close a connection after ~10 seconds of inactivity, you might be losing the race.