# Ignition **URL:** https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=92 [Latest](https://forum.inductiveautomation.com/latest.md) · [Categories](https://forum.inductiveautomation.com/categories.md) · [Tags](https://forum.inductiveautomation.com/tags.md) **Page:** 93 --- ## [Easy Chart Customizer for High Vacuum Pressures](https://forum.inductiveautomation.com/t/easy-chart-customizer-for-high-vacuum-pressures/113066)
**Author:** [@warren](https://forum.inductiveautomation.com/u/warren)\ **Replies:** 1\ **Last updated:** [January 5, 2026, 12:45pm UTC](https://forum.inductiveautomation.com/t/easy-chart-customizer-for-high-vacuum-pressures/113066 "2026-01-05T12:45:28Z")
I have an Easy Chart that is setup to read pressures from various sensors. The question I have is reference to the axis and how I can best show this data. These pressures are all measured in Torr, so I would expect a ran… --- ## [Alarm Pipeline : How the data handled after Gateway restart?](https://forum.inductiveautomation.com/t/alarm-pipeline-how-the-data-handled-after-gateway-restart/113068)
**Author:** [@Samkcr](https://forum.inductiveautomation.com/u/Samkcr)\ **Replies:** 0\ **Last updated:** [January 5, 2026, 8:57am UTC](https://forum.inductiveautomation.com/t/alarm-pipeline-how-the-data-handled-after-gateway-restart/113068 "2026-01-05T08:57:59Z")
Hi, I am using Alarm Pipeline for event escalation level by level. Also using Delay blocks to calculate the time and escalate once elapsed. If my gateway went down suddenly what happens to the pipeline? let’s consider e… --- ## [Calling on Web Dev file in doGet python resource?](https://forum.inductiveautomation.com/t/calling-on-web-dev-file-in-doget-python-resource/113048)
**Author:** [@travisaggiebrown](https://forum.inductiveautomation.com/u/travisaggiebrown)\ **Replies:** 5\ **Last updated:** [January 2, 2026, 5:03pm UTC](https://forum.inductiveautomation.com/t/calling-on-web-dev-file-in-doget-python-resource/113048 "2026-01-02T17:03:43Z")
I have a Python doGet script that I'm trying to read a html file, and I’ve been trying system.file.readFileAsString and I couldn’t get it to work with the mounted path or normal path and when I try system.file.fileExists… --- ## [Modbus Data Reading and conversion](https://forum.inductiveautomation.com/t/modbus-data-reading-and-conversion/113052)
**Author:** [@Adam\_Feigum](https://forum.inductiveautomation.com/u/Adam_Feigum)\ **Replies:** 2\ **Last updated:** [January 2, 2026, 4:56pm UTC](https://forum.inductiveautomation.com/t/modbus-data-reading-and-conversion/113052 "2026-01-02T16:56:46Z")
I’m trying to collect data off of some modbus devices i can see the data in Modscan and the correct Holding Registers but can not seem to get the mapping correct in ignition what am i doing wrong here I also have tri… --- ## [PDF viewer is showing Failed to load the page](https://forum.inductiveautomation.com/t/pdf-viewer-is-showing-failed-to-load-the-page/112937)
**Author:** [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Replies:** 7\ **Last updated:** [January 2, 2026, 3:36pm UTC](https://forum.inductiveautomation.com/t/pdf-viewer-is-showing-failed-to-load-the-page/112937 "2026-01-02T15:36:23Z")
Dear all, We have started a project to display .PDF or .MP4 video files. we choused for files stored with in the mounted folder location. instead of storing the SQL Database for eliminate slow response in query run in … --- ## [OPC UA Server Faulting on startup](https://forum.inductiveautomation.com/t/opc-ua-server-faulting-on-startup/113046)
**Author:** [@derek.stoddard](https://forum.inductiveautomation.com/u/derek.stoddard)\ **Replies:** 1\ **Last updated:** [January 2, 2026, 2:44pm UTC](https://forum.inductiveautomation.com/t/opc-ua-server-faulting-on-startup/113046 "2026-01-02T14:44:05Z")
Hi all, The last two days I have been experiencing an issue where the OPC UA server faults when I first start up my computer. I have been able to fix this by stopping the Ignition Gateway service, renaming the “opcua” f… --- ## [Adding associate data to UDT via database](https://forum.inductiveautomation.com/t/adding-associate-data-to-udt-via-database/113018)
**Author:** [@Eugene49](https://forum.inductiveautomation.com/u/Eugene49)\ **Replies:** 9\ **Last updated:** [January 2, 2026, 11:54am UTC](https://forum.inductiveautomation.com/t/adding-associate-data-to-udt-via-database/113018 "2026-01-02T11:54:41Z")
Given a machine UDT. I want to add more details such as machine description, location, short name, long name. The usual approach i see most developers do, is to use memory tags as place holder on UDT. But I don't find i… --- ## [Perspective With an Object Oriented Approach?](https://forum.inductiveautomation.com/t/perspective-with-an-object-oriented-approach/112885)
**Author:** [@wileama](https://forum.inductiveautomation.com/u/wileama)\ **Replies:** 15\ **Last updated:** [January 2, 2026, 12:22am UTC](https://forum.inductiveautomation.com/t/perspective-with-an-object-oriented-approach/112885 "2026-01-02T00:22:48Z")
I’m trying to get a feel for what’s possible architecture wise with perspective graphics. I’m working on my first Ignition project (Hurrah!) after working in the DCS world for a few years. The DCS HMI I worked with reall… --- ## [Numeric entry with unit conversion (bidirectional) question](https://forum.inductiveautomation.com/t/numeric-entry-with-unit-conversion-bidirectional-question/113027)
**Author:** [@Brian\_Stilson](https://forum.inductiveautomation.com/u/Brian_Stilson)\ **Replies:** 8\ **Last updated:** [December 31, 2025, 6:27pm UTC](https://forum.inductiveautomation.com/t/numeric-entry-with-unit-conversion-bidirectional-question/113027 "2025-12-31T18:27:55Z")
I’m working on numeric entry template that will automatically switch between metric and imperial, but only write imperial values to the PLC. Here are the template’s custom properties and parameters: the key property … --- ## [Null \`cfg\` and \`name\` in tagconfig DB](https://forum.inductiveautomation.com/t/null-cfg-and-name-in-tagconfig-db/113040)
**Author:** [@akivabrookler](https://forum.inductiveautomation.com/u/akivabrookler)\ **Replies:** 1\ **Last updated:** [December 31, 2025, 5:27pm UTC](https://forum.inductiveautomation.com/t/null-cfg-and-name-in-tagconfig-db/113040 "2025-12-31T17:27:42Z")
Does anyone know what these entries in the tagconfig table are that have null cfg and name? --- ## [Make custom fonts work offline in Ignition Edge Perspective (8.1.47)](https://forum.inductiveautomation.com/t/make-custom-fonts-work-offline-in-ignition-edge-perspective-8-1-47/113037)
**Author:** [@bismaylla](https://forum.inductiveautomation.com/u/bismaylla)\ **Replies:** 1\ **Last updated:** [December 31, 2025, 4:27pm UTC](https://forum.inductiveautomation.com/t/make-custom-fonts-work-offline-in-ignition-edge-perspective-8-1-47/113037 "2025-12-31T16:27:45Z")
Hi, I’m using Ignition Edge 8.1.47 with Perspective and I’m trying to use a custom font (Open Sans) in an offline environment (no internet access). What is the recommended way to load and use custom fonts offline in … --- ## [Switching Between Engineering Units - Best Practices](https://forum.inductiveautomation.com/t/switching-between-engineering-units-best-practices/19698)
**Author:** [@dion.botha](https://forum.inductiveautomation.com/u/dion.botha)\ **Replies:** 11\ **Last updated:** [December 31, 2025, 8:54am UTC](https://forum.inductiveautomation.com/t/switching-between-engineering-units-best-practices/19698 "2025-12-31T08:54:55Z")
Hi guys, I would like to create various multi-state buttons per window that allows the user to switch between different engineering units and am wondering if/how anyone has implemented this elegantly. Do you create a t… --- ## [System Name Override - Deployment Modes](https://forum.inductiveautomation.com/t/system-name-override-deployment-modes/113032)
**Author:** [@nicoli.liedtke](https://forum.inductiveautomation.com/u/nicoli.liedtke)\ **Replies:** 1\ **Last updated:** [December 30, 2025, 7:57pm UTC](https://forum.inductiveautomation.com/t/system-name-override-deployment-modes/113032 "2025-12-30T19:57:55Z")
I’ve been working on deployment mode overrides for configurations of Production, QA, and Dev. I wanted to override the Gateway system name depending what deployment mode we are in, but I’m now thinking this may not be a … --- ## [Required properties for tag import](https://forum.inductiveautomation.com/t/required-properties-for-tag-import/113031)
**Author:** [@Leor\_Fishman](https://forum.inductiveautomation.com/u/Leor_Fishman)\ **Replies:** 1\ **Last updated:** [December 30, 2025, 7:34pm UTC](https://forum.inductiveautomation.com/t/required-properties-for-tag-import/113031 "2025-12-30T19:34:49Z")
Is there a list about which properties are required vs optional for a given tag type for a json import? (e.g. for an opc tag, value is iirc optional, englow/eng high have default values, etc) --- ## [deriveExpressionGetter and deriveExpressionSetter](https://forum.inductiveautomation.com/t/deriveexpressiongetter-and-deriveexpressionsetter/113023)
**Author:** [@akivabrookler](https://forum.inductiveautomation.com/u/akivabrookler)\ **Replies:** 4\ **Last updated:** [December 30, 2025, 7:28pm UTC](https://forum.inductiveautomation.com/t/deriveexpressiongetter-and-deriveexpressionsetter/113023 "2025-12-30T19:28:18Z")
Where are deriveExpressionGetter and deriveExpressionSetter used within Ignition? They are mentioned in the docs as “JSON/Scripting Name” but tag export JSON files use readExpression and writeExpression instead. The tag… --- ## [Ignition Edge to Ignition Gateway connection setup](https://forum.inductiveautomation.com/t/ignition-edge-to-ignition-gateway-connection-setup/113028)
**Author:** [@larleth](https://forum.inductiveautomation.com/u/larleth)\ **Replies:** 3\ **Last updated:** [December 30, 2025, 6:01pm UTC](https://forum.inductiveautomation.com/t/ignition-edge-to-ignition-gateway-connection-setup/113028 "2025-12-30T18:01:02Z")
Hey there, i want to setup a site-to-site connection via netbird, between an edge gateway and ignition gateway. While testing this setup I realised that the connection had some difficulties when adding some network polic… --- ## [Calendar component and dateFormat bug](https://forum.inductiveautomation.com/t/calendar-component-and-dateformat-bug/113022)
**Author:** [@nathan.ramusat](https://forum.inductiveautomation.com/u/nathan.ramusat)\ **Replies:** 3\ **Last updated:** [December 30, 2025, 5:44pm UTC](https://forum.inductiveautomation.com/t/calendar-component-and-dateformat-bug/113022 "2025-12-30T17:44:07Z")
Hello, I’ve encountered a strange bug on the calendar component regarding the date it returns when I apply a dateFormat() onto it’s “Immediate Date” property. It looks like it updates the year a bit too soon, jumping f… --- ## [\[FEATURE\] Alarm Metrics - Add overall "Status" integer](https://forum.inductiveautomation.com/t/feature-alarm-metrics-add-overall-status-integer/112296)
**Author:** [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Replies:** 4\ **Last updated:** [December 30, 2025, 1:36pm UTC](https://forum.inductiveautomation.com/t/feature-alarm-metrics-add-overall-status-integer/112296 "2025-12-30T13:36:34Z")
In the diy version I was using in previous versions, I had a single “Status” integer tag that summarised all alarm states in the folder, e.g. if({\[.\]Active Unack}, 1, // Alarms active and unacked if({\[.\]Active Ack}, 2, … --- ## [Perspective Component Overlay Translation](https://forum.inductiveautomation.com/t/perspective-component-overlay-translation/99974)
**Author:** [@Abdelhak\_Sidi\_Ali\_Me](https://forum.inductiveautomation.com/u/Abdelhak_Sidi_Ali_Me)\ **Replies:** 6\ **Last updated:** [December 30, 2025, 10:12am UTC](https://forum.inductiveautomation.com/t/perspective-component-overlay-translation/99974 "2025-12-30T10:12:09Z")
Hello everyone, I am looking to translate overlay labels such as "ERROR" or "UNKOWN", and I can't seem to figure out a way to do it. Same term gets translated successfully when written in a label component. System… --- ## [Git and project branches](https://forum.inductiveautomation.com/t/git-and-project-branches/112502)
**Author:** [@daniel4](https://forum.inductiveautomation.com/u/daniel4)\ **Replies:** 7\ **Last updated:** [December 30, 2025, 9:32am UTC](https://forum.inductiveautomation.com/t/git-and-project-branches/112502 "2025-12-30T09:32:43Z")
I was super optimistic and was going to fix our development problems by putting our production project folder on git and then clone it to make new projects that my people could use(and later merge). And finally be rid of… --- ## [Setting up the outgoing connections on my Edge gateway to my central gateway](https://forum.inductiveautomation.com/t/setting-up-the-outgoing-connections-on-my-edge-gateway-to-my-central-gateway/113016)
**Author:** [@damienfarren90](https://forum.inductiveautomation.com/u/damienfarren90)\ **Replies:** 1\ **Last updated:** [December 30, 2025, 2:31am UTC](https://forum.inductiveautomation.com/t/setting-up-the-outgoing-connections-on-my-edge-gateway-to-my-central-gateway/113016 "2025-12-30T02:31:22Z")
Hi team, I am having trouble setting up the outgoing connection between my edge gateway and my central gateway. Both gateways are using version 8.1.20. On the central gateway, the edge remote certificate is approved an… --- ## [Trigger Transaction Group on Multiple Triggers: Mutually Exclusive Booleans](https://forum.inductiveautomation.com/t/trigger-transaction-group-on-multiple-triggers-mutually-exclusive-booleans/55254)
**Author:** [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\ **Replies:** 9\ **Last updated:** [December 29, 2025, 8:19pm UTC](https://forum.inductiveautomation.com/t/trigger-transaction-group-on-multiple-triggers-mutually-exclusive-booleans/55254 "2025-12-29T20:19:50Z")
I can’t quite get my head around this transaction group trigger. I have three Boolean tags that I want to trigger on when any of them go low. I’ve tried many permutations with binEnc(), masks, shifts, and boolean logic… --- ## [Gateway Alerts/Popups](https://forum.inductiveautomation.com/t/gateway-alerts-popups/113014)
**Author:** [@Jacob\_Dipietro](https://forum.inductiveautomation.com/u/Jacob_Dipietro)\ **Replies:** 0\ **Last updated:** [December 29, 2025, 6:56pm UTC](https://forum.inductiveautomation.com/t/gateway-alerts-popups/113014 "2025-12-29T18:56:15Z")
How do I disable these alerts, they are actively getting in the way of diagnosing them --- ## [Bidirectional Bindings](https://forum.inductiveautomation.com/t/bidirectional-bindings/112971)
**Author:** [@Xander\_Dawson-Fink](https://forum.inductiveautomation.com/u/Xander_Dawson-Fink)\ **Replies:** 10\ **Last updated:** [December 29, 2025, 4:47pm UTC](https://forum.inductiveautomation.com/t/bidirectional-bindings/112971 "2025-12-29T16:47:29Z")
I’m on 8.1.37 As I’ve written this, I think I solved my original question of why this behavior happens, but I’ll leave this here to provide some context. I’ve got some custom properties on a view that handle the informa… --- ## [Writing to Edge tags from a Central Gateway using OIDC authentication](https://forum.inductiveautomation.com/t/writing-to-edge-tags-from-a-central-gateway-using-oidc-authentication/112974)
**Author:** [@Julien\_BROSSE](https://forum.inductiveautomation.com/u/Julien_BROSSE)\ **Replies:** 2\ **Last updated:** [December 29, 2025, 8:45am UTC](https://forum.inductiveautomation.com/t/writing-to-edge-tags-from-a-central-gateway-using-oidc-authentication/112974 "2025-12-29T08:45:26Z")
Hello, For a project, I have the following architecture: One Ignition Standard Gateway, connected to an LDAP usingOpenID Connect On a remote site, an Ignition Edge Panel A Gateway Network connection configured … --- ## [Perspective Property Access Modes](https://forum.inductiveautomation.com/t/perspective-property-access-modes/97927)
**Author:** [@kgamble](https://forum.inductiveautomation.com/u/kgamble)\ **Replies:** 8\ **Last updated:** [December 29, 2025, 8:38am UTC](https://forum.inductiveautomation.com/t/perspective-property-access-modes/97927 "2025-12-29T08:38:55Z")
Question about property access modes and large datasets on screens. Are they keeping data from showing up in the Dom that exists in custom props, if it isnt being rendered into a component? Use case example: I creat… --- ## [Best way to show current day's uptime in a Perspective view](https://forum.inductiveautomation.com/t/best-way-to-show-current-days-uptime-in-a-perspective-view/112980)
**Author:** [@D\_Mitri\_Tompkins](https://forum.inductiveautomation.com/u/D_Mitri_Tompkins)\ **Replies:** 2\ **Last updated:** [December 29, 2025, 5:07am UTC](https://forum.inductiveautomation.com/t/best-way-to-show-current-days-uptime-in-a-perspective-view/112980 "2025-12-29T05:07:29Z")
I have a tag that correlates to an external companies’ mostly proprietary machine that we aren’t allowed to mess with the PLC of at all. The tag displays a product count (ranging from 0 to about 90) in the last minute, … --- ## [Ignition bundled OpenJDK from ORACLE?](https://forum.inductiveautomation.com/t/ignition-bundled-openjdk-from-oracle/113007)
**Author:** [@n099y](https://forum.inductiveautomation.com/u/n099y)\ **Replies:** 4\ **Last updated:** [December 29, 2025, 1:18am UTC](https://forum.inductiveautomation.com/t/ignition-bundled-openjdk-from-oracle/113007 "2025-12-29T01:18:54Z")
G’day, My company IT is now saying we need to get rid of any Java that is published from Oracle. I notice that the OpenJDK Platform Library 17.0.17 is controlled by Oracle which doesn’t sound real good for me being abl… --- ## [Edge gateway 8.3 plenty of error log InternalHistorian Error storing data point: AtomicPointImpl](https://forum.inductiveautomation.com/t/edge-gateway-8-3-plenty-of-error-log-internalhistorian-error-storing-data-point-atomicpointimpl/111661)
**Author:** [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Replies:** 6\ **Last updated:** [December 28, 2025, 9:35pm UTC](https://forum.inductiveautomation.com/t/edge-gateway-8-3-plenty-of-error-log-internalhistorian-error-storing-data-point-atomicpointimpl/111661 "2025-12-28T21:35:05Z")
I've upgrade a 8.1.49 edge gateway to 8.3.0 and now 8.3.1. Since I update to 8.3.0, I have plenty of those error logs: InternalHistorian Error storing data point: AtomicPointImpl{ java.lang.NullPointerException: n… --- ## [RFID Device with OPC-UA](https://forum.inductiveautomation.com/t/rfid-device-with-opc-ua/95612)
**Author:** [@Omar\_Mohamed1](https://forum.inductiveautomation.com/u/Omar_Mohamed1)\ **Replies:** 4\ **Last updated:** [December 27, 2025, 2:33pm UTC](https://forum.inductiveautomation.com/t/rfid-device-with-opc-ua/95612 "2025-12-27T14:33:12Z")
I have an RFID device that has an OPC-UA server. I tried to connect to the device's OPC server through my ignition server and it was successful, and I am able to see the tags coming from that RFID reader. Then I tried to… [Previous page](https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=91) [Next page](https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=93)