Siemens Sinumerik 840D sl Diagnostic Manual page 284

Overview of Alarms
NCK alarms
16949 Correspondence between marker of channel %1 and channel %2 is
invalid.
Parameters: %1 = Channel ID
%2 = Channel ID
Definitions: This channel defines a WAIT marker with other channels, which on their part have no correspondence
with this wait marker.
This channel's WAIT marker has no explicit counterpart in the other channel; i.e. the channels do not
mutually wait.
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Example
Ch 3Ch 5Ch 7
WAITM(99,3,5)
The wait markers in channels 3 and 5 mutually wait for each other and channel 7 only waits for channel
5. Therefore, channel 7 may continue when 5 and 7 have reached the wait marker, but channel 3 is
still far in front of the wait marker.
When it continues, channel 7 deletes its wait marker. When wait marker 99 is reached again, you can
no longer determine the behavior precisely.
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Reaction: Alarm display.
Remedy: In each wait marker, list all channels with which you want to synchronize, or suppress the alarm with
MD11410 $MN_SUPPRESS_ALARM_MASK, bit 23.
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Sample solution A:
Ch 3Ch 5Ch 7
WAITM(99,3,5,7)
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Sample solution B:
Ch 3Ch 5Ch 7
WAITM(99,3,5)
WAITM(88,5,7)
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Sample solution C:
Ch 3Ch 5Ch 7
WAITM(88,5,7)
WAITM(99,3,5)
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
16950 [Channel %1: ] Search run with hold block
Parameters: %1 = Channel ID
Definitions: Informational alarm.
The search run was not performed on the interruption block, instead, it touches down shortly before
that. This so-called "hold block" is generated by the part program command IPTRLOCK, or implicitly
defined by MD22680 $MC_AUTO_IPTR_LOCK. This is to prevent you from performing a search run
in critical program areas (e.g. gear hobbing). The alarm also displays that, instead of searching for the
block that actually was interrupted before, another block is being searched for. This behavior is
desired and the alarm serves only informational purposes.
Reaction: Alarm display.
Remedy: MD11410 $MN_SUPPRESS_ALARM_MASK, MD22680 $MC_AUTO_IPTR_LOCK and language
command IPTRLOCK
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
16951 [Channel %1: ] Search run in a protected program section.
Parameters: %1 = Channel ID
Definitions: A part programmer can define protected part program sections with the language commands IPTR-
LOCK and IPTRUNLOCK. Every search run in these program sections will then be acknowledged with
alarm 16951. In other words: When the alarm appears, the user has started a search run (Serupro
type) and the search target lies in a protected area. A protected area can also be defined implicitly
with the MD22680 $MC_AUTO_IPTR_LOCK.
2-284
WAITM(99,3,5) WAITM(99,5,7)
WAITM(99,3,5,7) WAITM(99,3,5,7)
WAITM(99,3,5)
WAITM(88,5,7)
WAITM(88,5,7)
WAITM(99,3,5)
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009