The X2View manual documents Programmable → PLC Editor for ladder logic and Programmable → Graphical Programming. Refer to PLCEditor-Ch.pdf and Graphical program-Ch.pdf in the installed Help folder for the respective instructions and workflows.
The JS manual documents DoPI(szPV, szSP, szKP, szKI, flInitValue, flDeadBand, nPeriod). The first four arguments are existing tag names for process value, setpoint, proportional term and integral term. The remaining arguments specify initial value, dead band and period as numbers or custom variables. Validate a test loop before applying it to real control. This does not imply support for every PID feature, SFC or optimization algorithm.