User Manual

Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999
Landis & Staefa Division System Messages --- DCS Messages 3-121
Unit=xx; yy/zz Bad Disk transfers .........
DIAG TYP 00:00:00 NAME
Unit=xx; yy/zz Bad Disk transfers
->DEVINI (M.TRFF)
(call maintenance!)
During transfers to and from the disk unit xx, yy of zz (zz=1000) data transfers have to
be repeated. With an active severe Ring diagnostic ($S,TRBI=200), the error rate is
reported as yy/10000.
The causes for bad data traffic with a disk include the following:
–
Disk having bad sectors.
–
Contact problems between disk unit and controller.
–
Faulty disk controller if both disk drives exhibit the same conditions.
–
Strong interference on the mains.
There is no data loss when this message appears since bad data block transfers are
repeated up to eight times.
If the error rate of the message begins to increase, it is a warning that increasing
difficulties can be expected with the disk.
–
Check the connecting cable for breaks and pinched insulation.
–
Replace the disk controller
–
Reformat the disk drive.
Explanation
Note
Action