# Ml1100 Series A

**URL:** <https://forum.inductiveautomation.com/t/ml1100-series-a/9123>\
**Category:** Ignition\
**Created:** [September 30, 2014, 7:50pm UTC](https://forum.inductiveautomation.com/t/ml1100-series-a/9123 "2014-09-30T19:50:28Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Curlyandshemp](https://avatars.discourse-cdn.com/v4/letter/c/bcef8e/32.png) [@Curlyandshemp](https://forum.inductiveautomation.com/u/Curlyandshemp)\
**Post date:** [September 30, 2014, 7:50pm UTC](https://forum.inductiveautomation.com/t/ml1100-series-a/9123/1 "2014-09-30T19:50:28Z")

</div>

trying to commission a ML1100 series A plc.  
I read other posts about series A only allowing 1 ethernet connection.

I can ping plc and browse to CPU with web browser. oPC-Ua micrologix driver just bounces between connected and disconnected.  
What port is the driver using?

I tried a trial kepware connection to this plc using port 44818 and can connect.  
Ignition V7.6.2

---

<div class="post-metadata">

**Author:** ![Curlyandshemp](https://avatars.discourse-cdn.com/v4/letter/c/bcef8e/32.png) [@Curlyandshemp](https://forum.inductiveautomation.com/u/Curlyandshemp)\
**Post date:** [September 30, 2014, 9:48pm UTC](https://forum.inductiveautomation.com/t/ml1100-series-a/9123/2 "2014-09-30T21:48:06Z")

</div>

[quote=“Curlyandshemp”]trying to commission a ML1100 series A plc.  
I read other posts about series A only allowing 1 ethernet connection.

I can ping plc and browse to CPU with web browser. oPC-Ua micrologix driver just bounces between connected and disconnected.  
What port is the driver using?

I tried a trial kepware connection to this plc using port 44818 and can connect. Rslogix500 and Pv+ connect ok.

Ignition V7.6.2[/quote]

Flashed ML1100 to series B V14 and all is good, but customer gave me grief as to how Ignition was only hmi/scada with issues connecting to this plc.