How to examine the system log file on the Perkin-Elmers

identify the log file
The system log file on a PE ICS system is usually SYS.LOG/0
The system log file on a PE TCS system is usually NIGHT.LOG/0

... but do check by doing 

D F,-.LOG
look for the column labelled last written - the log file (sys.log or night.log) will usually have the current day's date.
  • examine any other related files
    The log files can get big so periodically they are renamed with the last letter of the suffix set to 0 (zero) or 1 etc. To see what other log files are available in the series do 
    D F,NIGHT.-/0
    or 
    D F,SYS.-/0
  • disable logging
    This is only necessary if you want to examine the current log file. To disable logging you give the set log command without any filename. 
    SET LOG
  • examine the log file using the PErkin-Elmer Editor 
    LOAD EDIT3201
TASK EDIT3201
START
EDIT3201> GET NIGHT.LOG