How to exchange Unicode string via OPC UA

[HmiGuide]

ctrlX Plc supports Unicode string with 2 bytes. But how can they be exchanged via OpcUA, when non ASCII characters are contained? Here is my example with special Turkish letters: wstrTest: WSTRING:="ABC şŞÜöÇ⪠abc"; When I display it in UAExpert or WebIQ: "ABC _^ÜöÇâ^ abc" is displayed. Some of the letters are not shown differntly. Is there a way to exchange Unicode strings (e.g. change the encoding to UTF8 on PLC side)?

[webiq-sk]

Hello,

all ASCII characters and all Turkish characters are available in UTF-8 so if you have problems displaying those characters they are not transferred/created as two-byte UTF-8 characters correctly. This also explains this in detail: https://stackoverflow.com/questions/14680059/how-to-define-declare-utf-8-code-points-for-turkish-spe...

OPC-UA defines UTF-8 as the encoding. WebIQ fully supports UTF-8 - you could even use Emojis as item names if you wanted.

Questions regarding the PLC side (ctrlX) can only be answered by Bosch Rexroth.

Regards,
Sascha Kimmel

[HmiGuide]

Ok. I check your link to verify if it helps to find a solution.

[HmiGuide · Accepted solution]

The OpcUa server of the ctrlX does currently not support Unicode characters. With the MLC XM21 OpcUa server and WebIQ it works fine. I try to find out, when this problem will be fixed.