# Wago PFC300 (750-8302) and WagoAppSQL\_xxx libs

**URL:** <https://www.wago.community/t/wago-pfc300-750-8302-and-wagoappsql-xxx-libs/2601>\
**Category:** CODESYS\
**Created:** [February 27, 2026, 9:22am UTC](https://www.wago.community/t/wago-pfc300-750-8302-and-wagoappsql-xxx-libs/2601 "2026-02-27T09:22:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![FPawlak](https://avatars.discourse-cdn.com/v4/letter/f/f6c823/32.png) [@FPawlak](https://www.wago.community/u/FPawlak)\
**Post date:** [February 27, 2026, 9:22am UTC](https://www.wago.community/t/wago-pfc300-750-8302-and-wagoappsql-xxx-libs/2601/1 "2026-02-27T09:22:16Z")

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Hi everyone,

I have a problem on new PLC PFC300 (750-8302) with WagoAppSQL\_MySQL lib. It looks like it is not compatible with 64bits PLCs. On older PLCs like 750-8212 and 750-8202 it works without problems.

I am using the newest Codesys/libs/devices description

- Codesys V 3.5 SP21 Patch 5
- Wago Devices and Libraries 2.0.8.9

The problem is when I add FbMySql\_Login to my POU - it won’t compile with error messages like “C0032: Cannot convert type ‘ULINT’ to type ‘UDINT’”.

I think the problem is more related to the internal wagosyssocket library than to WagoAppSQL\_….

I also tried WagoAppSQL\_MsSQL, but I ended up with the same errors.

Am I doing something wrong, or is it just a bug? Please see the print screen below.

Thanks a lot for any help.

 ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/2X/0/078adf264fdf6ae435099f04f1ec9e1ae7510b7b.png)

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**Author:** ![Justin](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@Justin](https://www.wago.community/u/Justin)\
**Post date:** [July 26, 2026, 8:17pm UTC](https://www.wago.community/t/wago-pfc300-750-8302-and-wagoappsql-xxx-libs/2601/2 "2026-07-26T20:17:31Z")

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Not sure if you ended up getting this working - I have a similar issue. I am upgrading code, having shifted from a PFC200 (32 bit) to the PFC300 (64 bit). Like you, I received compile errors. Version 1.7.1.1 of the library seems to have resolved those errors, but now my Execute and Query implementations report MYSQL-ERROR: Not connected with database, LOGIN before use. That is after the FbMySql\_Login output reporst XConnected = True. I note the new refTLSContext input for FbMySql\_Login and have updated my code to include that, but it doesn’t alter the error message of Execute and Query commands.