# Ignition **URL:** https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=925 [Latest](https://forum.inductiveautomation.com/latest.md) · [Categories](https://forum.inductiveautomation.com/categories.md) · [Tags](https://forum.inductiveautomation.com/tags.md) **Page:** 926 --- ## [Easy chart database fault](https://forum.inductiveautomation.com/t/easy-chart-database-fault/53432)
**Author:** [@Wladimir\_Celedon](https://forum.inductiveautomation.com/u/Wladimir_Celedon)\ **Replies:** 6\ **Last updated:** [November 29, 2021, 3:52pm UTC](https://forum.inductiveautomation.com/t/easy-chart-database-fault/53432 "2021-11-29T15:52:41Z")
Hi. I’m using Ignition 7.8.5 with MySQL 5.6 and the MySQL Connector Java 5.1.23. When I tried to watch a trend, the easy chart get a fault and the worst case was gateway restarted. I checked the log and found this: INF… --- ## [ClassCastException: Cannot coerce value 'java.lang.Object@](https://forum.inductiveautomation.com/t/classcastexception-cannot-coerce-value-java-lang-object/18798)
**Author:** [@sbrannen](https://forum.inductiveautomation.com/u/sbrannen)\ **Replies:** 7\ **Last updated:** [January 27, 2020, 5:17am UTC](https://forum.inductiveautomation.com/t/classcastexception-cannot-coerce-value-java-lang-object/18798 "2020-01-27T05:17:14Z")
Greetings, I hope this info keeps someone from pulling their hair out. Too late for me... Most have seen the 'Cannot coerce value" error, and it's usually the result of something we've done. I'm not sure this falls i… --- ## [Unsigned 32bit int not work fine?!](https://forum.inductiveautomation.com/t/unsigned-32bit-int-not-work-fine/53519)
**Author:** [@stra](https://forum.inductiveautomation.com/u/stra)\ **Replies:** 4\ **Last updated:** [November 29, 2021, 1:42pm UTC](https://forum.inductiveautomation.com/t/unsigned-32bit-int-not-work-fine/53519 "2021-11-29T13:42:46Z")
I have: Siemens s7-1500 OPC-UA (in siemens cpu) a UDInt plc tag when I try to write a number with a 32nd bit to 1 (more than 2147483647) I have this error: “Invalid data type, unable to convert value ‘Int4’ to data t… --- ## [Making a test bench in perspective](https://forum.inductiveautomation.com/t/making-a-test-bench-in-perspective/53522)
**Author:** [@IA\_old\_forum](https://forum.inductiveautomation.com/u/IA_old_forum)\ **Replies:** 1\ **Last updated:** [November 29, 2021, 1:19pm UTC](https://forum.inductiveautomation.com/t/making-a-test-bench-in-perspective/53522 "2021-11-29T13:19:32Z")
I am trying to make some sort of test bench/table for a machine line. It would look like something like this: On the left is the count of errors in production, on the right (the test "area") another table that can be… --- ## [Audit Log - Additional Fields in Gateway Audit Log View](https://forum.inductiveautomation.com/t/audit-log-additional-fields-in-gateway-audit-log-view/53433)
**Author:** [@brownja667](https://forum.inductiveautomation.com/u/brownja667)\ **Replies:** 3\ **Last updated:** [November 29, 2021, 12:33pm UTC](https://forum.inductiveautomation.com/t/audit-log-additional-fields-in-gateway-audit-log-view/53433 "2021-11-29T12:33:31Z")
I am trying to track down a difference between the way the Gateway Audit Log is presented in three instances at a customer. All three Ignition installs are 8.1.7. The Audit Log settings all appear to be the same. Howe… --- ## [Using 3rd party python SVG library](https://forum.inductiveautomation.com/t/using-3rd-party-python-svg-library/53462)
**Author:** [@janne.p](https://forum.inductiveautomation.com/u/janne.p)\ **Replies:** 6\ **Last updated:** [November 29, 2021, 7:26am UTC](https://forum.inductiveautomation.com/t/using-3rd-party-python-svg-library/53462 "2021-11-29T07:26:05Z")
I was trying to use 3rd party library for SVG drawing without success. The goal is to draw image based on values gathered from ignition and show it on view indicating progress and dynamic packaging. The library in use w… --- ## [Designer V8.1.10 Constantly crashing](https://forum.inductiveautomation.com/t/designer-v8-1-10-constantly-crashing/51644)
**Author:** [@josh3](https://forum.inductiveautomation.com/u/josh3)\ **Replies:** 12\ **Last updated:** [November 29, 2021, 6:46am UTC](https://forum.inductiveautomation.com/t/designer-v8-1-10-constantly-crashing/51644 "2021-11-29T06:46:06Z")
Hi, My Designer is constantly crashing, when the error occurs I cant open another view until I close the program and reset. Error: “Unable to deserialize …” --- ## [Designer-expr-pollingfunc-timer WARN Expressions.addSeconds](https://forum.inductiveautomation.com/t/designer-expr-pollingfunc-timer-warn-expressions-addseconds/53512)
**Author:** [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Replies:** 1\ **Last updated:** [November 28, 2021, 1:50pm UTC](https://forum.inductiveautomation.com/t/designer-expr-pollingfunc-timer-warn-expressions-addseconds/53512 "2021-11-28T13:50:13Z")
I have this appearing in my Designer console every second. I’ve done a find of the addSeconds function and can’t see it used anywhere (excluded graphics as I have nothing open). I also don’t have any client timer script… --- ## [\[IGN-2416\] 8.1.4-RC1 Can't change parent data type of non-nested UDT instance](https://forum.inductiveautomation.com/t/ign-2416-8-1-4-rc1-cant-change-parent-data-type-of-non-nested-udt-instance/44769)
**Author:** [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Replies:** 12\ **Last updated:** [November 12, 2021, 7:02am UTC](https://forum.inductiveautomation.com/t/ign-2416-8-1-4-rc1-cant-change-parent-data-type-of-non-nested-udt-instance/44769 "2021-11-12T07:02:36Z")
I’m trying to change the parent UDT type of a whole bunch of UDT instances, however I can no longer do this. I know there was a change that was going in at some stage that was going to stop nested UDT instances within a … --- ## [Create a valid header for a perspective table](https://forum.inductiveautomation.com/t/create-a-valid-header-for-a-perspective-table/53505)
**Author:** [@phandc](https://forum.inductiveautomation.com/u/phandc)\ **Replies:** 2\ **Last updated:** [November 27, 2021, 5:51pm UTC](https://forum.inductiveautomation.com/t/create-a-valid-header-for-a-perspective-table/53505 "2021-11-27T17:51:44Z")
Hi everyone, I am trying to create data for my perspective table using the script below. def runAction(self): data = \[\] data.append({'Site Name':'Site A', 'Location':'Some where'}) self.props.data = data However, wh… --- ## [Writing to a tag bit](https://forum.inductiveautomation.com/t/writing-to-a-tag-bit/53498)
**Author:** [@beckya](https://forum.inductiveautomation.com/u/beckya)\ **Replies:** 7\ **Last updated:** [November 27, 2021, 12:56am UTC](https://forum.inductiveautomation.com/t/writing-to-a-tag-bit/53498 "2021-11-27T00:56:29Z")
Hello, I have been able to address and add the OPC tag bit and I have a good quality tag. I have tried to write to the tag by changing the value from 0 to 1 as an Integer tag or by changing it to a boolean tag and chang… --- ## [Prepared Queries Not Substituting Floats Correctly](https://forum.inductiveautomation.com/t/prepared-queries-not-substituting-floats-correctly/53471)
**Author:** [@catherine.fowler](https://forum.inductiveautomation.com/u/catherine.fowler)\ **Replies:** 7\ **Last updated:** [November 26, 2021, 4:20pm UTC](https://forum.inductiveautomation.com/t/prepared-queries-not-substituting-floats-correctly/53471 "2021-11-26T16:20:51Z")
I’m using Ignition 8.1.12 Perspective and found one of my queries was executing fine when I was checking for an integer in my WHERE clause, but when checking for a float it was failing. I boiled it down to a simpler quer… --- ## [Named query multiple DB](https://forum.inductiveautomation.com/t/named-query-multiple-db/53489)
**Author:** [@Arnaud\_Declerck](https://forum.inductiveautomation.com/u/Arnaud_Declerck)\ **Replies:** 3\ **Last updated:** [November 26, 2021, 4:05pm UTC](https://forum.inductiveautomation.com/t/named-query-multiple-db/53489 "2021-11-26T16:05:51Z")
Would it be possible to do a named query with select from multiple database connection? --- ## [How to resize vision root container to exact size](https://forum.inductiveautomation.com/t/how-to-resize-vision-root-container-to-exact-size/53494)
**Author:** [@chaoliang](https://forum.inductiveautomation.com/u/chaoliang)\ **Replies:** 1\ **Last updated:** [November 26, 2021, 4:03pm UTC](https://forum.inductiveautomation.com/t/how-to-resize-vision-root-container-to-exact-size/53494 "2021-11-26T16:03:29Z")
Hi it could be noobie question, but for years I still couldn’t find a proper way to resize the vision root container to exact size, for example: 1336\*768. Please advise. --- ## [OPC UA - Device simulator program adds a digit to the values once save button clicked](https://forum.inductiveautomation.com/t/opc-ua-device-simulator-program-adds-a-digit-to-the-values-once-save-button-clicked/53484)
**Author:** [@RC23](https://forum.inductiveautomation.com/u/RC23)\ **Replies:** 1\ **Last updated:** [November 26, 2021, 3:36pm UTC](https://forum.inductiveautomation.com/t/opc-ua-device-simulator-program-adds-a-digit-to-the-values-once-save-button-clicked/53484 "2021-11-26T15:36:49Z")
Hi there, I am going through the elective course “Building in Perspective” and noticed that the tank capacity was around 4931.00 instead of 49.31 so I checked the OPC UA connection for the simulator and played around wi… --- ## [\[FEATURE\] Convert UDT instance into standard tags](https://forum.inductiveautomation.com/t/feature-convert-udt-instance-into-standard-tags/53478)
**Author:** [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Replies:** 1\ **Last updated:** [November 26, 2021, 3:27pm UTC](https://forum.inductiveautomation.com/t/feature-convert-udt-instance-into-standard-tags/53478 "2021-11-26T15:27:49Z")
I have a UDT instance that I realise I don’t want to be a UDT anymore since there will be too many variations to its instances. Of course, copying the json of UDT instances doesn’t include with it any of the tag config a… --- ## [How things work - the life of the screen](https://forum.inductiveautomation.com/t/how-things-work-the-life-of-the-screen/52419)
**Author:** [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Replies:** 4\ **Last updated:** [November 26, 2021, 2:22pm UTC](https://forum.inductiveautomation.com/t/how-things-work-the-life-of-the-screen/52419 "2021-11-26T14:22:17Z")
hi all I have a screen which is swapped to the second screen but the first screen does not seem to be destroyed because when navigating back it seems like everything is exactly as it was left. I have concerns however th… --- ## [I can not make the barcode visible when i click the button, Need solution in scripting](https://forum.inductiveautomation.com/t/i-can-not-make-the-barcode-visible-when-i-click-the-button-need-solution-in-scripting/53486)
**Author:** [@Atanu\_Sanyal](https://forum.inductiveautomation.com/u/Atanu_Sanyal)\ **Replies:** 1\ **Last updated:** [November 26, 2021, 12:18pm UTC](https://forum.inductiveautomation.com/t/i-can-not-make-the-barcode-visible-when-i-click-the-button-need-solution-in-scripting/53486 "2021-11-26T12:18:00Z")
Hello,I need some assistance regarding the below point i want to make the barcode visible when i click the button, can anybody help me to solve this problem, I am new in this platform, barcode is having visibility param… --- ## [Unable to view Perspective inside Iframe or Object tag in HTML](https://forum.inductiveautomation.com/t/unable-to-view-perspective-inside-iframe-or-object-tag-in-html/44947)
**Author:** [@nimer](https://forum.inductiveautomation.com/u/nimer)\ **Replies:** 2\ **Last updated:** [November 26, 2021, 7:41am UTC](https://forum.inductiveautomation.com/t/unable-to-view-perspective-inside-iframe-or-object-tag-in-html/44947 "2021-11-26T07:41:42Z")
Hi, I am trying to integrate Perspective view inside an HTML5 Iframe tag and Object tag. i have edited the X\_frame policies and am able to view the Perspective loading screen. However, I am unable to see anything other … --- ## [Recommendation for MQTT Edge Device](https://forum.inductiveautomation.com/t/recommendation-for-mqtt-edge-device/41227)
**Author:** [@ddurant](https://forum.inductiveautomation.com/u/ddurant)\ **Replies:** 14\ **Last updated:** [November 26, 2021, 6:21am UTC](https://forum.inductiveautomation.com/t/recommendation-for-mqtt-edge-device/41227 "2021-11-26T06:21:29Z")
Does anyone have a recommendation for a MQTT edge device? We looked at the Moxa one and weren’t real thrilled about its capabilities. Thanks, --- ## [Perspective on Android tablet in Kiosk mode](https://forum.inductiveautomation.com/t/perspective-on-android-tablet-in-kiosk-mode/53479)
**Author:** [@Sam.Taylor](https://forum.inductiveautomation.com/u/Sam.Taylor)\ **Replies:** 0\ **Last updated:** [November 26, 2021, 3:32am UTC](https://forum.inductiveautomation.com/t/perspective-on-android-tablet-in-kiosk-mode/53479 "2021-11-26T03:32:55Z")
Hi, I want to run Perspective workstation as a kiosk on an android tablet. I have achieved this via scripting on the most part (system.perspective.workstation.toKiosk()) however I would ideally like to run the app autom… --- ## [Invalid Key Perspective Binding](https://forum.inductiveautomation.com/t/invalid-key-perspective-binding/53474)
**Author:** [@pkhoshroo](https://forum.inductiveautomation.com/u/pkhoshroo)\ **Replies:** 1\ **Last updated:** [November 25, 2021, 11:09pm UTC](https://forum.inductiveautomation.com/t/invalid-key-perspective-binding/53474 "2021-11-25T23:09:27Z")
Hello all, I am using a flex repeater in my perspective project and I bound the instance to a named query. What should be the return format of the instance? Is it json? If yes, I get an invalid key error on json. I a… --- ## [Binding to custom session object key and then referencing produces Bad\_Stale quality](https://forum.inductiveautomation.com/t/binding-to-custom-session-object-key-and-then-referencing-produces-bad-stale-quality/53475)
**Author:** [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\ **Replies:** 0\ **Last updated:** [November 25, 2021, 9:48pm UTC](https://forum.inductiveautomation.com/t/binding-to-custom-session-object-key-and-then-referencing-produces-bad-stale-quality/53475 "2021-11-25T21:48:12Z")
v8.1.5 I created a custom session prop which was an object for e.g. session.custom.thing = { 'param1': 1, 'param2': 2 } When I bound session.custom.thing to a View custom prop and then bound another custom prop to r… --- ## [Moving Window Average Alarms](https://forum.inductiveautomation.com/t/moving-window-average-alarms/49286)
**Author:** [@sahil.jain](https://forum.inductiveautomation.com/u/sahil.jain)\ **Replies:** 5\ **Last updated:** [November 25, 2021, 9:06pm UTC](https://forum.inductiveautomation.com/t/moving-window-average-alarms/49286 "2021-11-25T21:06:50Z")
Hi, I have some tags being populated from a device. I would like to create various moving window average based alarms - e.g. if the average value in the past n minutes is outside some setpoints, raise an alarm. I’m lo… --- ## [Perspective dynamic Navigation tree build](https://forum.inductiveautomation.com/t/perspective-dynamic-navigation-tree-build/39394)
**Author:** [@Arnaud\_Declerck](https://forum.inductiveautomation.com/u/Arnaud_Declerck)\ **Replies:** 5\ **Last updated:** [November 25, 2021, 7:38pm UTC](https://forum.inductiveautomation.com/t/perspective-dynamic-navigation-tree-build/39394 "2021-11-25T19:38:13Z")
Hi, is there a way to build dinamically the navigation tree in function of a folder structure or tag string into perspective ? regards --- ## [Get Value result from a bound SetpointA in OPC tag Alarm](https://forum.inductiveautomation.com/t/get-value-result-from-a-bound-setpointa-in-opc-tag-alarm/53450)
**Author:** [@Bradley\_Maxted](https://forum.inductiveautomation.com/u/Bradley_Maxted)\ **Replies:** 3\ **Last updated:** [November 25, 2021, 7:16pm UTC](https://forum.inductiveautomation.com/t/get-value-result-from-a-bound-setpointa-in-opc-tag-alarm/53450 "2021-11-25T19:16:06Z")
I have an OPC tag measuring Vibration from 0 - 3. The high alarm setpoint is defined in a PLC as 1, but can be modified. I’m passing the high alarm setpoint into ignition as a separate OPC tag, and binding the value of… --- ## [Disable bindings onStartUp](https://forum.inductiveautomation.com/t/disable-bindings-onstartup/53466)
**Author:** [@flavien](https://forum.inductiveautomation.com/u/flavien)\ **Replies:** 2\ **Last updated:** [November 25, 2021, 5:24pm UTC](https://forum.inductiveautomation.com/t/disable-bindings-onstartup/53466 "2021-11-25T17:24:03Z")
Hi, Is it possible to disable bindings on view StartUp ? I’ve created a view which shows a popup message when “aggDatasets.dev1” variable is empty and linked with payload param. Payload depends on user choice. On sta… --- ## [Docked Window Size not correct on Client with Vision](https://forum.inductiveautomation.com/t/docked-window-size-not-correct-on-client-with-vision/30455)
**Author:** [@tmahaffey](https://forum.inductiveautomation.com/u/tmahaffey)\ **Replies:** 3\ **Last updated:** [March 6, 2020, 12:00am UTC](https://forum.inductiveautomation.com/t/docked-window-size-not-correct-on-client-with-vision/30455 "2020-03-06T00:00:04Z")
I’m having a hard time figuring out why my docked window’s size isn’t adjusting its size as I open up the client. The main screen seems to be scaling correctly. I don’t understand why the buttons on my docked window are … --- ## [Best Place for a script to manipulate Tag values](https://forum.inductiveautomation.com/t/best-place-for-a-script-to-manipulate-tag-values/53465)
**Author:** [@ihtus\_ihtus](https://forum.inductiveautomation.com/u/ihtus_ihtus)\ **Replies:** 3\ **Last updated:** [November 25, 2021, 3:46pm UTC](https://forum.inductiveautomation.com/t/best-place-for-a-script-to-manipulate-tag-values/53465 "2021-11-25T15:46:14Z")
Where is the best place for “Black Box Script” ? --- ## [\[BUG-2715\] searchable Dropdown stays focussed after selecting other dropdowns/textfield](https://forum.inductiveautomation.com/t/bug-2715-searchable-dropdown-stays-focussed-after-selecting-other-dropdowns-textfield/50261)
**Author:** [@victordcq](https://forum.inductiveautomation.com/u/victordcq)\ **Replies:** 6\ **Last updated:** [November 25, 2021, 12:20pm UTC](https://forum.inductiveautomation.com/t/bug-2715-searchable-dropdown-stays-focussed-after-selecting-other-dropdowns-textfield/50261 "2021-11-25T12:20:28Z")
In perspective, When i select a couple of dropdowns in a row and then go to a text field and type something, the text gets typed in the searchable dropdowns. Showing off some really odd behavior. i type in ‘df’ (some ra… [Previous page](https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=924) [Next page](https://forum.inductiveautomation.com/c/ignition/6.md?no_subcategories=false&page=926)