Error writing to tag: array element type mismatch

Ignition
1

Hello everyone,

I've made a template in Perspective, that allows me to monitor and configure a Phoenix Contact Caparoc Circuit Breaker. This template is connected to an according UDT that has a relatively complex structure. The connection between the tags in the PLC and Ignition Gateway works just fine, i can monitor and display all the tags in the UDT and the data is correct. The perspective template also displays all the data correctly.

To configure some values I am using a numeric entry field with a indirect bidirectional tag binding. These values are defined as a Byte-Array withing the Caparoc UDT. When I change these values in the PLC they are correctly displayed in the entry field. But as soon as I want to change the value via Ignition, i get the following error exception:

Error writing to tag '[default]Caparoc/slots/0/setup/setChannelCurrent': array element type mismatch.

Here a tag path to the value I want to manipulate:
[default]Caparoc/slots/3/setup/setChannelCurrent[0]

Did anyone esle have a similar problem? Are there any ideas, what causes the error exception?

2

Maybe if you post some screenshots of the tags and the props of the numeric entry field it will be a bit clearer.
Also your error listed is using a different path to the tag path you listed, so that indicates you are missing something, as a binding uses the same path for both read and write.

3

When you wish to write array types, you must use actual java arrays (from the jarray jython module). For most OPC types, you cannot manipulate individual elements--you have to write the whole array every time.