Please consider registering

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —

— Match —

— Forum Options —

Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Remote DA or A&E server
May 24, 2022
19:21, EEST
Utrecht, Netherlands
Forum Posts: 5
Member Since:
November 11, 2020
sp_UserOfflineSmall Offline


To my great distress I found in the documentation (section Limitations) of the latest version (1.5.10) of the UA Gateway a blown up version of the earlier:
No Remote DCOM Connections
Apparently I wasn’t the first to have missed the old two-liner version of this section (or why would blow it up with a hure picture and more warning texts)
To my knowledge this quite severe limitation is nowhere else mentioned. It is also quite odd, as the whole idea of DCOM (D for Distributed) is to have remote connections.

The text however is less definitive than the old one. Actually the new text doesn’t say it cannot be done, just that it isn’t supported.
Which means that someone knows, at least to some extend, how it can be done.

My problem is that I cannot place the UAGateway at the same server as the OPC server. There is a categorical NO there.
So if no remote connection is possible, UAGateway is useless to me and I have wasted quite a lot of money on it.

So my question is whether anyone can help me with or give me a hint or a direction to search on how to accomplish a remote DCOM connection.

May 25, 2022
16:02, EEST
Jimmy Ni

Forum Posts: 25
Member Since:
February 1, 2019
sp_UserOfflineSmall Offline


Remote DCOM is not tested on UaGateway and is out of the scope for warranty or our technical support. Additionally, Microsoft is hardening DCOM connections in Windows due to security concerns, which makes DCOM connections even more troublesome. See https://opcfoundation.org/forum/classic-opc-da-ae-hda-xml-da-etc/microsoft-dcom-update/ for more details. Therefore, the generic recommendation is to always install UaGateway in the same computer with the OPC DA server.

However, with proper configuration, DCOM technically works on UaGateway. You can find some instruction on how to create a connection between a remote OPC COM DA server and UaGateway at https://documentation.unified-automation.com/uagateway/1.5.10/html/dcom_sec.html. Please note that this instruction is only intended to provide hints for the “out-of-support” use case and does not guarantee a successful DCOM connection.

Forum Timezone: Europe/Helsinki

Most Users Ever Online: 267

Currently Online:
10 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

hbrackel: 120

pramanj: 86

ibrahim: 74

rocket science: 65

kapsl: 57

gjevremovic: 49

Xavier: 42

fred: 41

TimK: 41

Fransua33: 39

Member Stats:

Guest Posters: 0

Members: 2891

Moderators: 17

Admins: 1

Forum Stats:

Groups: 3

Forums: 15

Topics: 1261

Posts: 5369

Newest Members:

allisontz18, Elmer1493vok, AspectMontageAtrox, miloparris0, josettegrenier, berniceiy1, Sylviaser, gilbertstonge93, waldomarriott43, madgeroque72

Moderators: Jouni Aro: 930, Otso Palonen: 32, Tuomas Hiltunen: 5, janimakela: 0, Pyry: 1, Terho: 0, Petri: 0, Bjarne Boström: 775, Heikki Tahvanainen: 402, Jukka Asikainen: 1, moldzh08: 0, Jimmy Ni: 25, Teppo Uimonen: 21, Markus Johansson: 39, Niklas Nurminen: 0, Matti Siponen: 207, Lusetti: 0

Administrators: admin: 1