If you change pwcal.conf, you need to restart wcald.
pwcal.conf is located at the same place as wcal.conf. If you want to put pwcal.conf elsewhere, you must change variable definition at top of pwcald.
Parameter definitions use the most common single line format. They start with the parameter name (which may consist of multiple words), then comes an equal to sign (=), and the rest of the line is the parameter value. No comments are allowed at end of the lines.
Give the name of the log file of pwcald. If this resource is not set, no log file is generated. The default value is /tmp/pwcald.log.