Hello Edwin Schwellinger,

I found problem in serial communication as below. I would be very appreciated if you can raise these problem on Jira.

1. SysCom, 3.5.17.0, setting is as below.
   COM_RS232C.sPort:=SysCOM.SYS_COMPORT1;
   COM_RS232C.byParity:=SysCOM.SYS_EVENPARITY;
   COM_RS232C.byStopBits:=SysCOM.SYS_ONESTOPBIT;
   COM_RS232C.ulBaudrate:=SysCOM.SYS_BR_115200;
   COM_RS232C.ulBufferSize:=50;
   COM_RS232C.ulTimeout:=0;
   COM_RS232CEx.byByteSize:=8;
   When I sent data via SysCom.SysComWrite to PC, it read data normally with NOPARITY setting on PC but I read corrupted data with EVENPARITY setting.
2. Problem in Serial Communication, 3.5.17.0, setting is as below
   eParameters : ARRAY [1..7] OF COM.PARAMETER := [
   (udiParameterId := COM.CAA_Parameter_Constants.udiPort, udiValue := 1),
   (udiParameterId := COM.CAA_Parameter_Constants.udiBaudrate, udiValue := 115200),
   (udiParameterId := COM.CAA_Parameter_Constants.udiParity, udiValue := COM.PARITY.EVEN),
   (udiParameterId := COM.CAA_Parameter_Constants.udiStopBits, udiValue := COM.STOPBIT.ONESTOPBIT),
   (udiParameterId := COM.CAA_Parameter_Constants.udiTimeout, udiValue := 0),
   (udiParameterId := COM.CAA_Parameter_Constants.udiByteSize, udiValue := 8),
   (udiParameterId := COM.CAA_Parameter_Constants.udiBinary, udiValue := 1) ];
   I generated error code 5004, when I executed the code below.
   comOpen(xExecute:= TRUE, usiListLength:= 7, pParameterList:= ADR(eParameters), hCom=> hCom);

Problem solved!

I found the solution.
I changed the serial connection from GPIO to USB serial convertor on Raspberry pi it works.
I added these in Raspberry

sudo nano /etc/CODESYSControl.cfg
[SysCom]
Linux.Devicefile.2=/dev/ttyUSB0
Linux.Devicefile.1=/dev/ttyS0

I would recommend to move this section to:
sudo nano /etc/CODESYSControl_User.cfg
otherwise it will not work after a runtime update