Siemens SINUMERIK 840Di Diagnostic Manual page 488

Overview of Alarms
NCK alarms
28008 NCU link: conflict in timer setting of NCU %1
Parameters: %1 = NCU number
Definitions: Error message of the NCU link module. When the NCU link was powered up, the local NCU (indicated
by the alarm) detected a conflict between its timer configuration and the configuration of the NCU in
the alarm parameter.
Reaction: NC not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Check machine data configuration.
Program Switch control OFF - ON.
Continuation:
28009 NCU link: conflict in bus parameters of NCU %1
Parameters: %1 = NCU number
Definitions: Error message of the NCU link module. When the NCU link was powered up, the local NCU (indicated
by the alarm) detected a conflict between its timer bus configuration and the configuration of the NCU
in the alarm parameter.
Reaction: NC not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Check machine data configuration.
Program Switch control OFF - ON.
Continuation:
28010 NCU link: the NCU %1 has not received a message
Parameters: %1 = NCU number
Definitions: Error message of the NCU link module. During operation of the NCU link, a message from the local
NCU to the NCU specified in the alarm parameter has failed. A hardware error may have occurred
(e.g. sporadic disturbances on the communication line).
Reaction: NC not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: The message does not fail until several attempts have been made to repeat the communication. The
number of repetitions can be increased with MD LINK_MAX_RETRY_CTR.
Program Switch control OFF - ON.
Continuation:
2-488
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006