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How to reset TCS network communications

The loss of TCS network communications to the operator's workstation can be indicated by any of the following:

  • A red Z0 in the upper right corner and/or the number 999 to the right of Z0.
  • A failure of the mgtcs.tcl to update the UT.
  • A failure of hartmannloop with the error "Cannot coerce string `/' to int", or
  • "Image header parameter not found".
  • (This error may also appear if the IMACS guider does not send its EDS
  • information, such as probe position.)
  • A watchdog should reset the communications in about 5 minutes (worst case 11).
  • If it does not, the TCS should be rebooted and DUT should be reentered by hand.


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