Howto #21
Problem: COLPOS ERROR.

    Diagnostic :
  • Red error flag "COLPOS ERROR" in PMAS Status Window.

    Explanation :
  • The VME motor controller has experienced an error condition. The error may be related to a hardware problem, a software problem , or to a spurious error condition. If the error is prevailing despite the solution advised below, a more serious hardware failure must be suspected. Consult support for advice.

    Solution :
  • On rike prompt, type :
    
colReset
    
limevalSet
    
colInit
    
colStatus
    After colStatus, the following message should appear:
    COL_STATUS: THEVERYFIRST
    
                               steps
    
COL_SET_POSITION:              0
    
COL_LIMITS:                    -1600 1100
    
COL_ACTUAL_POSITION:           0

    If this is not the case, reset the vme controller lea (reset button on lea frontpanel - do not confuse with abort button !) Repeat the sequence from above. If there is no success, call support.

    Note: it is possible to circumvent software control of this device to rescue an observation by manually moving the drive into best focus. There is a vernier screw mounted to the axis of the motor which can be used for this purpose. FOR CAHA STAFF ONLY !