# ControlLogix v31 Comuncation Problem

**URL:** <https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536>\
**Category:** Ignition\
**Created:** [December 20, 2018, 2:43pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536 "2018-12-20T14:43:16Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Mau89](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mau89/32/20680_2.png) [@Mau89](https://forum.inductiveautomation.com/u/Mau89)\
**Post date:** [December 20, 2018, 2:43pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/1 "2018-12-20T14:43:16Z")

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HI,  
I exchange about 40k tags with a ControlLogix 1756.  
After upgrade of firmware form v20 to v31 and conseguential change of ignition driver, I have some problem of comunication.

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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:** [December 20, 2018, 2:52pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/2 "2018-12-20T14:52:33Z")

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Yes, the performance of v21+ protocol is significantly worse than of the v20 and prior protocol.

We’ve made some fixes to the request optimization that may help you in the 7.9.11 Logix Driver module. This is assuming you’ve updated your tag paths after the driver change and are having issues with “stale” tags, not incorrect OPC item paths.

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<div class="post-metadata">

**Author:** ![Mau89](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mau89/32/20680_2.png) [@Mau89](https://forum.inductiveautomation.com/u/Mau89)\
**Post date:** [December 20, 2018, 3:05pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/3 "2018-12-20T15:05:43Z")

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yes, I have update all opc path, with some problem on bit arrays.  
When 7.9.11 is will released?

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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:** [December 20, 2018, 3:08pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/4 "2018-12-20T15:08:40Z")

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I don’t know when the release is planned, but I can provide you with a beta build of the module if you’d like.

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<div class="post-metadata">

**Author:** ![Mau89](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mau89/32/20680_2.png) [@Mau89](https://forum.inductiveautomation.com/u/Mau89)\
**Post date:** [December 20, 2018, 4:20pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/5 "2018-12-20T16:20:40Z")

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Yes, I can try it, thanks.

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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:** [December 20, 2018, 4:22pm UTC](https://forum.inductiveautomation.com/t/controllogix-v31-comuncation-problem/21536/6 "2018-12-20T16:22:52Z")

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You can download it [from here](https://www.dropbox.com/s/2bbgglb46waub4w/Logix%20Driver-module.modl?dl=0).

After you install it and it runs for a few minutes, take a look at the diagnostics page for this device in the gateway. There should be a lot of performance measurements. If you’re still having problems you may have to call into support so they can look at it.