# OPC Connection to OFS (Schneider OPC Factory) - Addresses need space at the end?

**URL:** <https://forum.inductiveautomation.com/t/opc-connection-to-ofs-schneider-opc-factory-addresses-need-space-at-the-end/91388>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 5, 2024, 7:32am UTC](https://forum.inductiveautomation.com/t/opc-connection-to-ofs-schneider-opc-factory-addresses-need-space-at-the-end/91388 "2024-06-05T07:32:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [June 5, 2024, 7:32am UTC](https://forum.inductiveautomation.com/t/opc-connection-to-ofs-schneider-opc-factory-addresses-need-space-at-the-end/91388/1 "2024-06-05T07:32:12Z")

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I'm connecting to an OFS OPC-DA server, a Schneider application to connect to Schneider PLCs, and noticed something weird. Some addresses in Ignition to access the tags from the OPC server need a space added to the end of them, otherwise the values read as "null".

E.g.  
This works (`KANG_PLC!Citrus_LowPressure `)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/8/c807b73d9c6927fa7288eaea74df994975cb5453.png)  
But this reads as `null` (`KANG_PLC!Citrus_LowPressure`)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/1/c1c057edd0c248471e37bf850a3e3a46fe5f7916.png)

I'm reading these tags in another SCADA platform as well and they read fine without the ending space, so figured it's something in Ignition?

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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:** [June 11, 2024, 1:46pm UTC](https://forum.inductiveautomation.com/t/opc-connection-to-ofs-schneider-opc-factory-addresses-need-space-at-the-end/91388/2 "2024-06-11T13:46:48Z")

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Did you figure this out?

As far as I can tell we pass the OPC Item Path as the ItemId, completely unmodified, just like we do with OPC UA as the NodeId. So if you need or don't need a space that seems like a problem with the server.

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [June 12, 2024, 8:52am UTC](https://forum.inductiveautomation.com/t/opc-connection-to-ofs-schneider-opc-factory-addresses-need-space-at-the-end/91388/3 "2024-06-12T08:52:47Z")

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Nope I still have the space at the end 🤷 nothing would surprise me re the opc da server though....