Siemens Sinumerik 840D sl Diagnostic Manual page 452

Overview of Alarms
NCK alarms
Program Con- Switch control OFF - ON.
tinuation:
28011 IPO time insufficient for NCU link. Link cycle time: %1
Parameters: %1 = Microseconds
Definitions: Error message of the NCU link module. All messages must be transmitted within one interpolator
cycle. This applies particularly to message retries. The time was not sufficient! The parameter indi-
cates how many microseconds the NCU link module needs in order to send the message.
Reaction: NC not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Increase the interpolator cycle time, i.e. modify one of the following MDs on all NCUs.
IPO_SYSCLOCK_TIME_RATIO
SYSCLOCK_CYCLE_TIME
Program Con- Switch control OFF - ON.
tinuation:
28012 NCU link: synchronization cycle signal failure %1 times
Parameters: %1 = Number of cycles
Definitions: Error message of the NCU link module that does not occur at NCU 1. The NCU's are synchronized
via their own NCU-link clock line. A large number of cycle signals are missing. The parameter indi-
cates how many cycles have failed.
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 the hardware.
Program Con- Switch control OFF - ON.
tinuation:
28020 NCU link: too many link axes configured %1
Parameters: %1 = Number of link axis connections
Definitions: Unfortunately, the communication capacity of the NCU link is insufficient for this link axis configuration.
The link axis configuration is determined by the following MDs:
- MD10002 $MN_AXCONF_LOGIC_MACHAX_TAB
- MD12701 $MN_AXCT_AXCONF_ASSIGN_TAB1 ... and all further container def.
Reaction: NC not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Connect a smaller number of axes across the link or combine the axes in fewer containers.
Machine data to be changed:
- MD10002 $MN_AXCONF_LOGIC_MACHAX_TAB
- MD12701 $MN_AXCT_AXCONF_ASSIGN_TAB1 ... and all further container def.
Program Con- Switch control OFF - ON.
tinuation:
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009