Indicates the occurrence of LOS errors on the control path
of Xbar.
frameLosErr (0) -- Frame LOS error.
sliErrorOnControlLink0 (1) -- LOS detected on SLI
control link 0.
sliErrorOnControlLink1 (2) -- LOS detected on SLI
control link 1.
sliErrorOnControlLink2 (3) -- LOS detected on SLI
control link 2.
sliErrorOnControlLink3 (4) -- LOS detected on SLI
control link 3.
This object is a read-clear object, that is the value
of the object is cleared on every read.