# CIP Connection Size Parameter **URL:** \ **Category:** Ignition\ **Tags:** ignition79\ **Created:** [July 3, 2017, 11:42pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681 "2017-07-03T23:42:05Z")\ **Posts on this page:** 8\ **Page:** 3
**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:** [January 3, 2023, 10:32pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/41 "2023-01-03T22:32:07Z")
The considerations for AOIs that were exposed in this topic have been turned into a new, highly-optimized driver module. Beta announcement here: > [@Automation Professionals' EtherNet/IP Communication Suite V2](https://forum.inductiveautomation.com/t/automation-professionals-ethernet-ip-communication-suite-v2/68190): > > Automation Professionals is pleased to announce its latest EtherNet/IP Communications Suite driver module, a major upgrade to its EtherNet/IP Class1 Communications module, as a Public Beta. As of April 15, 2023, this is now a Production Release. The primary new feature is its new Generic EtherNet/IP Client Driver, a drop-in replacement for IA's Logix V21+ driver and its Omron NJ/NX driver. It does work with older Logix processors, and also works with Rockwell's MicroLogix 8xx family (ethernet… ---
**Author:** ![Mustafa\_Al-Shawaf](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@Mustafa\_Al-Shawaf](https://forum.inductiveautomation.com/u/Mustafa_Al-Shawaf)\ **Post date:** [September 13, 2023, 3:28pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/42 "2023-09-13T15:28:36Z")
Are there any AB PLC experts out there that can help my team find this setting? We have 3 CompactLogix PLCs are our plant. One of them seems to support CIP connection sizes larger than 500. The other two do not support anything larger than 500. Our PLC guy doesn't know why or which settings to change in order to support the larger connection size. I was hoping to point him to the exact menu/window in the software to change the setting. Thanks for the help. ---
**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:** [September 13, 2023, 3:31pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/43 "2023-09-13T15:31:36Z")
It isn't configurable. Newer hardware and firmware support larger connections. When using ControlLogix with a comm card in the chassis, or routing through such, all hardware along the chain has to support it to be usable from Ignition. (My new driver automatically figures out the correct value for all but the oldest firmwares out there.) For Rockwell products, those that support more than 500 support 4000. ---
**Author:** ![Mustafa\_Al-Shawaf](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@Mustafa\_Al-Shawaf](https://forum.inductiveautomation.com/u/Mustafa_Al-Shawaf)\ **Post date:** [September 13, 2023, 9:53pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/44 "2023-09-13T21:53:42Z")
Thanks. Is there anywhere in the Allen Bradley documentation where one can find out if the hardware is compatible with the larger CIP size. These PLCs are not that old. I am able to use a larger CIP size on the CompactLogix 1769-L33ER. However, it doesn't seem to work on the 1769-L32E. To be more specific, I can make the change in CIP size in Ignition, and the PLC looks like it is responding when I check the device status in Ignition. However, when I look at the tag values, Ignition says the data is bad. I'm not sure if this is the typical response that people get when hardware doesn't support the larger CIP size. Thanks for your help. ---
**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 13, 2023, 9:57pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/45 "2023-09-13T21:57:39Z")
> [@Mustafa\_Al-Shawaf](#): > > These PLCs are not that old. > [@Mustafa\_Al-Shawaf](#): > > However, it doesn't seem to work on the 1769-L32E. Old enough to be discontinued... What firmware version does your L32E have on it? Ideally you're on something older than 20.19 and using the legacy AB driver instead of the newer one meant for v21+. ---
**Author:** ![Mustafa\_Al-Shawaf](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@Mustafa\_Al-Shawaf](https://forum.inductiveautomation.com/u/Mustafa_Al-Shawaf)\ **Post date:** [September 13, 2023, 10:32pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/46 "2023-09-13T22:32:18Z")
Thanks Kevin. It looks like we are running the older firmware. I will switch to the legacy drivers and that should help out. ---
**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 13, 2023, 10:33pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/47 "2023-09-13T22:33:36Z")
It will help performance, but it won't allow you to set a larger connection size. You need to give up on that for these older models. Make sure they're not running 20.19, which is a firmware deadzone where you have to use the newer driver but you get terrible performance with it. You'll know either way because the legacy driver won't be able to read tags if the firmware is too new. ---
**Author:** ![Mustafa\_Al-Shawaf](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@Mustafa\_Al-Shawaf](https://forum.inductiveautomation.com/u/Mustafa_Al-Shawaf)\ **Post date:** [September 13, 2023, 11:53pm UTC](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681/48 "2023-09-13T23:53:43Z")
Thanks Kevin. I'll see if we can make due. If not, I will make the case for an upgrade. I appreciate the help. [Previous page](https://forum.inductiveautomation.com/t/cip-connection-size-parameter/14681.md?page=2)