User Manual

CM2U8567E / 04.1999 VISONIK DCS Functions and System Messages VVS18 Siemens Building Technologies
3-28 System Messages --- DCS Messages Landis & Staefa Division
Chip loop at xxx ,contact L & S
STAP TYP 00:00:00 NAME
Chip loop at xxx ,contact L & S
->MSGDEV (M.RDCL)
Data exchange with the SDLC chip of ring NAME cannot be terminated within the
maximum allowed number of attempts. (100 attempts is approximately equal to 2 msec
depending on computer type.)
The chip is reset automatically and a functional check on the SKLC ring controller is
carried out.
If the controller is defective, the associated status change of ring NAME is reported.
If the fault is apparent only for a short time, normal operation will be resumed
immediately.
Therefore, this message only appears in very severe diagnostic mode ($S,TRBI=1000).
The xxx address points to the location in the program where the missing data is
expected to be found.
Ignore if the message appears only occasionally. If it appears quite often, please
contact the Landis & Staefa Service Department.
Possible causes are either a faulty SDLC chip or an incorrect bus configuration.
Explanation
Action