# System.opc.browse and system.opc.browseSimple read timeout

**URL:** <https://forum.inductiveautomation.com/t/system-opc-browse-and-system-opc-browsesimple-read-timeout/18258>\
**Category:** Ignition\
**Tags:** ignition79, scripting\
**Created:** [June 1, 2018, 2:37pm UTC](https://forum.inductiveautomation.com/t/system-opc-browse-and-system-opc-browsesimple-read-timeout/18258 "2018-06-01T14:37:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cmaynes](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmaynes/32/6852_2.png) [@cmaynes](https://forum.inductiveautomation.com/u/cmaynes)\
**Post date:** [June 1, 2018, 2:37pm UTC](https://forum.inductiveautomation.com/t/system-opc-browse-and-system-opc-browsesimple-read-timeout/18258/1 "2018-06-01T14:37:43Z")

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How we have things setup:  
A machine has a Siemens PLC  
We have a RedLion DSPLE unit to do the protocol conversion to Allen Bradley, which supports browsing  
We have our Allen-Bradley PLC tags mapped to the Siemens tags through the DSPLE

I am trying to browse the opc tags without dragging them into Ignition with the following code:

OPCServerName = ‘Ignition OPC-UA Server’  
plc\_name = ‘AppPLC001’  
status\_folder\_name = ‘MetznerBlack\_Status’  
codes\_folder\_name = ‘MetznerBlack\_Codes’  
TagPath\_Status = ‘ns=1;s=[%s]%s’ % ( plc\_name, status\_folder\_name )  
TagPath\_Codes = ‘ns=1;s=[%s]%s’ % ( plc\_name, codes\_folder\_name )  
status\_tag\_names = system.opc.browseSimple( OPCServerName, plc\_name, ‘_’ + status\_folder\_name + '_’, None )

every time I try to run this, I get a read timeout after about a minute or two.  
What am I doing wrong?

Sidenote:  
Dragging the tags into Ignition does work (i can browse the tags if I drag them in from the OPC server), but I would rather not have to duplicate them when I don’t need to do any advanced scripting on them, like performing such and such an action when a tag value changes.

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<div class="post-metadata">

**Author:** ![jlemons](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jlemons](https://forum.inductiveautomation.com/u/jlemons)\
**Post date:** [September 12, 2019, 11:58am UTC](https://forum.inductiveautomation.com/t/system-opc-browse-and-system-opc-browsesimple-read-timeout/18258/2 "2019-09-12T11:58:31Z")

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any luck with this? I have the same problem