Siemens SINUMERIK 840D Setup guide

Diagnostics Guide 11/2002 Edition
SINUMERIK 840D/840Di/810D

Edition: 11.02
SINUMERIK 840D/840Di/810D
Diagnostics Guide
Valid for
Control Software version
SINUMERIK 840D 6
SINUMERIK 840DE (Export version) 6
SINUMERIK 840D powerline 6
SINUMERIK 840DE powerline 6
SINUMERIK 840Di 2
SINUMERIK 840DiE (Export version) 2
SINUMERIK 810D 3
SINUMERIK 810DE (Export version) 3
SINUMERIK 810D powerline 6
SINUMERIK 810DE powerline 6
Alarms 1
Abbreviations / 2
References

Further information is available on the Internet under:
http://www.ad.sinumerik.de/sinumerik
This publication was produced with FrameMaker V7.0 and Designer
V7.0.
Reproduction of this document and/or transmittal thereof to third par-
ties, as well as utilization or disclosure of the contents thereof, are not
permitted unless express authorization is given in writing. Offenders
are liable to the payment of damages. All rights, including rights cre-
ated by patent grant or registration of a utility model or design, are re-
served.
Siemens AG, 1995–2002. All rights reserved
Other functions not described in this documentation might be execut-
able in the control. This does not, however, represent an obligation to
supply such functions with a new control or when servicing.
We have checked that the contents of this document correspond to
the hardware and software described. Nonetheless, differences can-
not be ruled out and we cannot therefore guarantee that they are com-
pletely identical. The information contained in this manual is reviewed
regularly and any necessary changes will be included in the next edi-
tion. Suggestions for improvement are welcome at all times.
Subject to change without prior notice
Order No. 6FC5 298-6AA20-0BP3 Siemens Aktiengesellschaft
Printed in Germany
SINUMERIK® Documentation
Printing history
Brief details of this edition and previous editions are listed below.
The status of each edition is shown by the code in the "Remarks" column.
Status code in the "Remarks" column:
A .... New documentation.
B .... Unrevised reprint with new order no.
C .... Revised edition with new status.
If factual changes have been made on a page since the last edition, this is indicated by a new
edition coding in the header on that page.
Edition Order No. Remarks
02.95 6FC5 298-2AA20-0BP0 A
04.95 6FC5 298-2AA20-0BP1 C
09.95 6FC5 298-3AA01-0BP0 Description of differences
03.96 6FC5 298-3AA20-0BP0 C
08.97 6FC5 298-4AA20-0BP0 C
12.97 6FC5 298-4AA20-0BP1 C
12.98 6FC5 298-5AA20-0BP0 C
08.99 6FC5 298-5AA20-0BP1 C
04.00 6FC5 298-5AA20-0BP2 C
10.00 6FC5 298-6AA20-0BP0 C
09.01 6FC5 298-6AA20-0BP1 C
02.02 6FC5 298-6AA20-0BP2 C
11.02 6FC5 298-6AA20-0BP3 C
This manual is included in the documentation on CD-ROM (DOCONCD)
Version Order No. Remarks
11.02 6FC5 298-6CA00-0BG3 C
Trademarks
SIMATIC®, SIMATIC HMI®, SIMATIC NET®, SIROTEC®, SINUMERIK® and SIMODRIVE® are
trademarks of Siemens. Other product names used in this documentation may be trademarks which,
if used by third parties, could infringe the rights of their owners.

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 Preface
Preface
Structure of the
documentation
The SINUMERIK documentation is divided up into three levels:
•General documentation
•User documentation
•Manufacturer/Service documentation.
This manual is intended as a work of reference. It allows the operator at the machine tool:
- To correctly assess special situations when operating the machine.
- To ascertain the reaction of the system to the special situation.
- To utilize the possibilities for continued operation following the special situation.
- To follow references to other documentation containing further details.
Scope This manual describes the alarms from the NC kernel (NCK) area, the PLC and the
SIMODRIVE 611D drive.
Other alarms can occur from the MMC (Man-Machine Communication) areas. They are
displayed on the operator panel in the form of self-explanatory text. They are documented
in the section on MMC messages.
For special situations in conjunction with the integrated PLC, please refer to the SIMATIC
S7-300 documentation.
Please contact your local SIEMENS office for more detailed information about documen-
tation on SINUMERIK 840D/810D and publications which apply to all SINUMERIK con-
trols.
Target group This documentation is intended for manufacturers of machine tools with SINUMERIK
840D or SINUMERIK 810D and SIMODRIVE 611D.
Hotline If you have any questions, please get in touch with our hotline:
A&D Technical Support
Tel.: ++49-(0)180-5050-222
Fax: ++49-(0)180-5050-223
e-mail: [e-mail]
If you have any questions about the documentation (suggestions, corrections), please fax
or e-mail us at the following addresses:
Fax: ++49-(0)9131-98-2176
email: [e-mail]
Fax form: See the reply form at the end of the document.
Internet address http://www.ad.siemens.de/sinumerik

Preface 11.02
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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
SINUMERIK 840D
powerline
From 09.2001
•SINUMERIK 840D powerline and
•SINUMERIK 840DE powerline
will be available with improved performance. The following hardware description contains
a list of the available powerline modules:
References: /PHD/ SINUMERIK 840D Configuration Manual
SINUMERIK 810D
powerline
From 12.2001
•SINUMERIK 810D powerline and
•SINUMERIK 810DE powerline
will be available with improved performance. The following hardware description contains
a list of the available powerline modules:
References: /PHC/ SINUMERIK 810D Configuration Manual
Information about
software versions
The software versions specified in the documentation are valid for the SINUMERIK 840D
and SINUMERIK 810D controls. The software versions are related to one another; see
the table:
Export version The following functions are not included in the export version:
Sorting The alarms are sorted by ascending alarm number in each section. There are gaps in the
sequence.
SINUMERIK
840D
SINUMERIK
810D
SINUMERIK
810D
powerline
SINUMERIK
840i
6.3 (09.01) corresponds to - 6.1 (12.01) 2.1 (07.01)
5.3 (04.00) corresponds to 3.3 (04.00) - 1.1 (07.00)
3.7 (03.97) corresponds to 1.7 (03.97) - -
Function 810E 840DE
Machining package five axes - -
Handling transformation package (5 axes) - -
Multiple-axes interpolation (> 4 axes) - -
Helical interpolation 2D+6 - -
Synchronous actions step 2 - O1)
Measurement level 2 - O1)
Adaptive control - O1)
Continuous dressing - O1)
Using the compile cycles (OEM) - -
Multidimensional sag compensation - O1)

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 Preface
Structure of the
alarm descriptions
Each alarm consists of an alarm number and alarm text. There are four description cate-
gories:
•Explanation
•Reaction
•Remedy
•Program continuation.
For a more detailed explanation of the "Reaction" category, please refer to the
section: "System reactions on alarms"
For a more detailed explanation of the "Program continuation" category, please refer to
the section: "Clear criteria for alarms"
NCK alarms Table 1_1 Alarm number ranges
HMI alarms/messages Table 1_2 Alarm number ranges, continued
611D alarms Table 1_3 Alarm number ranges, continued
000 000 - 009 999 General alarms
010 000 - 019 999 Channel alarms
020 000 - 029 999 Axis/spindle alarms
030 000 - 099 999 Functional alarms
060 000 - 064 999 Cycle alarms SIEMENS
065 000 - 069 999 Cycle alarms user
070 000 - 079 999 Compile cycles, manufacturer and
OEM
100000 - 100999 Basic system
101000 - 101999 Diagnostics
102000 - 102999 Services
103000 - 103999 Machine
104000 - 104999 Parameter
105000 - 105999 Programming
106000 - 106999 Spare
107000 - 107999 OEM
109000 - 109999 Distributed systems (M to N)
110000 - 110999 HMI Embedded messages
120000 - 120999 HMI Advanced messages
300000 - 399999 Drive

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
PLC alarms/messages Table 1_4 Alarm number ranges, continued
1) More detailed information is available via the diagnostics function (diagnostics buffer) of
SIMATIC STEP 7.
2) The PLC alarms in the range 500000 - 899999 are configured and described by the
machine manufacturer.
Action list The actions described in the alarm texts ("Action %---") are explained in detail in the table
in the "Action list" section.
Search helps For better orientation, you are provided with a table of contents as well as the appendices:
•Abbreviations
•List of References.
Safety
Explanation of symbols
Ordering data supplement
This symbol appears in this documentation whenever a described function is not con-
tained in the standard scope of supply and has to be ordered as an option.
400000 - 499999 General alarms
500000 - 599999 Channel alarms2)
600000 - 699999 Axis/spindle alarms2)
700000 - 799999 User area2)
800000 - 899999 Sequencers/graphs2)
(810001 - 810009 System error messages from PLC1))
Danger
Please check the situation at the system very carefully on the basis of the description
of the alarms that have occurred. Eliminate the causes for the occurrence of the alarms
and acknowledge in the manner indicated. Otherwise, the machine, workpiece, stored
settings and possibly your health are at risk.
!Important
This notice indicates that important facts have to be taken into consideration.

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 Preface
Danger and
warning concept
The following warning notices with varying degrees of significance are used in the docu-
ment:
Danger
Indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury or in substantial property damage.
Warning
Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury or in substantial property damage.
Caution
Used with the safety alert symbol indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury or in property damage.
Caution
Used without safety alert symbol indicates a potentially hazardous situation which, if
not avoided, may result in property damage.
Notice
Used without the safety alert symbol indicates a potential situation which, if not
avoided, may result in an undesirable result or state.

Preface 11.02
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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition

XI
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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 Preface
Contents
Alarms 1-13
1.1 Overview of system error alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.2 Overview of alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.3 List of action numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-575
1.4 Error codesof alarm 300500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-589
1.5 System reactions on alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-598
1.6 Cancelcriteriaforalarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-600
Appendix 2-601
A Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-601
BReferences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-607
1) Further information is available via the diagnostic function (diagnostic buffer) of SIMATIC
STEP 7.

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 1 Alarms
1
Alarms
1.1 Overview of system error alarms
System errors The following alarms are system errors:
1000 1005 1013 1017
1001 1010 1014 1018
1002 1011 1015 1019
1003 1012 1016 1160
These system error alarms are not described in detail. If such a system error occurs,
please note
- the alarm number,
- the alarm text and
- and the internal system error number
and send these details to
SIEMENS AG, A&D MC, System Support
Hotline
Phone: [phone] (Germany)
Fax: [phone]
Phone: ++49-(0)180-5050-222 (International)
Fax: ++49-(0)9131-98-2176
1.2 Overview of alarms

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
1000 System error %1
Parameters: %1 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
Remedy: Make a note of the error text and contact Siemens A&D MC, Hotline
• Phone: [phone] (Germany)
• Fax: [phone]
• Phone: ++49-(0)180-5050-222 (International)
• Fax: ++49-(0)180-5050-223
• email techsupp[email protected]ens.de
Program Continuation: Switch control OFF - ON.
1001 System error %1
Parameters: %1 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- Mode group not ready.
- Channel not ready.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key in all channels of this mode group. Restart part program.
1002 System error %1
Parameters: %1 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the Delete key or NC START.
1003 Alarm pointer for this self-clearing alarm %1 is zero
Parameters: %1 = Incorrect alarm number
Definitions: The address (zero pointer) used by the compile cycle manufacturer or by the operating
system for self-clearing alarms is not allowed in the system.
Reactions: - Alarm display.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Check setCCAlarm/setAlarm (...) call.
Program Continuation: Clear alarm with the Delete key or NC START.

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 1 Alarms
1004 Alarm reaction to NCK alarm incorrectly configured
Parameters: %1 = Incorrect alarm number
Definitions: The alarm reaction configured by the operating system or the compile cycles manufac-
turer is incorrect.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Change alarm reaction
Program Continuation: Switch control OFF - ON.
1005 Operating system error %1 parameter %2 %3 %4
Parameters: %1 = Operating system error number
%2 = Operating system error parameter 1
%3 = Operating system error parameter 2
%4 = Operating system error parameter 3
Definitions: This alarm indicates that the operating system has detected a serious error.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Switch control OFF - ON.
1010 Channel %1 system error %2 action %3
Parameters: %1 = Channel number
%2 = System error number
%3 = Action number/action name
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- Interpreter stop
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Switch control OFF - ON.
1011 Channel %1 %3 %4 system error %2
Parameters: %1 = Channel number
%2 = System error number
%3 = Optional parameter: Block number, label
%4 = Optional parameter: Action number, ....

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- Interpreter stop
- NC Start disable in this channel.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key. Restart part program
1012 Channel %1 system error %2 %3 %4
Parameters: %1 = Channel number
%2 = System error number
%3 = Parameter1
%4 = Parameter2
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the Delete key or NC START.
1013 Channel %1 system error %2
Parameters: %1 = Channel number
%2 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key. Restart part program
1014 Channel %1 system error %2
Parameters: %1 = Channel number
%2 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- Local alarm reaction.
- Mode group not ready.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key in all channels of this mode group. Restart part program.

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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
11.02 1 Alarms
1015 Channel %1 axis %2 system error %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error. Especially
with parameter %3 (system error number) = 840001 = Problem with tool management,
the identification for the axis is not contained in parameter %2, but instead, further infor-
mation for the diagnostics (= Status of the data management/magazine no./location no./T
no.)
Reactions: - Alarm display.
- Interface signals are set.
- Local alarm reaction.
- Channel not ready.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key. Restart part program
1016 Channel %1 axis %2 system error %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- Local alarm reaction.
- Mode group not ready.
- Channel not ready.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key in all channels of this mode group. Restart part program.
1017 Channel %1 axis %2 system error %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = System error number
Definitions: With this alarm, internal alarm states are displayed that, in conjunction with the trans-
ferred error number, provide information on the cause and location of the error.
Reactions: - Alarm display.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the Delete key or NC START.
1018 Floating point arithmetic error in channel %1 task %2 station %3 FPU state %4 %4
Parameters: %1 = Channel number
%2 = Task ID
%3 = Station priority
%4 = FPU status
Definitions: The floating point unit of the processor has found a computational error.

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Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Mode group not ready, also effective for single axes
- Alarm reaction delay is canceled.
- NC Stop on alarm.
- NC Start disable in this channel.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key in all channels of this mode group. Restart part program.
1019 Floating point arithmetic error at address %3 in channel %1 task %2 FPU state
%4
Parameters: %1 = Channel number
%2 = Task ID
%3 = Code address of operation that triggered the error
%4 = FPU status
Definitions: The floating point unit of the processor has triggered an exception on account of a compu-
tational error.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Alarm reaction delay is canceled.
- Mode group not ready, also effective for single axes
- NC Stop on alarm.
- NC Start disable in this channel.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Clear alarm with the RESET key in all channels of this mode group. Restart part program.
1030 System error in link module error code %1 error type %2
Parameters: %1 = Hex-Zahl Link-Error
%2 = Hex-Zahl Link-Error-Type
Definitions: This alarm is not a user error. An internal error has occurred in the software of the link
module. Two parameters are output with this error for debugging purposes. They provide
information about the cause and location of the error.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Switch control OFF - ON.
1031 Link module generated an unspecified error %1 NCU %2 %3 %4
Parameters: %1 = Hex-Zahl unspecified status in stateOfLinkModules
%2 = NCU number
%3 = Command from link module to NCK
%4 = Status of own link

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11.02 1 Alarms
Definitions: This alarm is not a user error.
• 1. If NCU== 0 -> A parameter not equal to zero was not found
• 2. If NCU not equal to zero -> An error which the NC was not able to interpret in the con-
nection to this NCU. The error is output as a number. It is possible that the NCU link
module is running a newer software version than the NC.
The other parameters are used for error localization in the NC/LINK-MODUL software.
Reactions: - Alarm display.
- Interface signals are set.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Switch control OFF - ON.
1100 No valid firmware
Definitions: No memory card or memory card without valid firmware (license) inserted.
Reactions: - Alarm display.
Remedy: Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see
alarm 1000)
Program Continuation: Switch control OFF - ON.
1160 Assertion failed in %1: %2
Parameters: %1 = String (path with program name)
%2 = String (line number)
Definitions: This alarm is purely a development alarm and will not appear in a delivered software ver-
sion. For an OEM customer, this alarm could indicate that an alarm has occurred in the
system software. Handling of the 'assertion' allows error conditions leading to this alarm to
be defined in the system software during the development phase. After the development
phase, this alarm output is no longer active.
Reactions: - NC not ready.
- Channel not ready.
- Alarm reaction delay is canceled.
- The NC switches to follow-up mode.
- NC Start disable in this channel.
- NC Stop on alarm.
- Alarm display.
- Interface signals are set.
Remedy: Check the cause of the error in the specified software component at the specified line
number.
Program Continuation: Clear alarm with the RESET key in all channels. Restart part program.
2000 PLC sign-of-life monitoring
Definitions: The PLC must give a sign of life within a defined period of time (machine data 10100
PLC_CYCLIC_TIMEOUT). If this does not occur, the alarm is triggered.
The sign of life is a counter reading on the internal NC/PLC interface which the PLC
causes to count up with the 10 ms time alarm. The NCK also tests cyclically whether the
counter reading has changed.

1 Alarms 11.02
1-20 Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
Reactions: - Local alarm reaction.
- NC not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department. Check monitoring time frame
in NCK-MD 10100 PLC_CYCLIC_TIMEOUT (reference value: 100ms).
Establish the cause of the error in the PLC and eliminate it (analysis of the ISTACK. If
monitoring has responded with a loop in the user program rather than with a PLC Stop,
there is no ISTACK entry).
Program Continuation: Switch control OFF - ON.
2001 PLC has not started up
Definitions: The PLC must give a sign of life within a period of time defined in MD 10120
PLC_RUNNINGUP_TIMEOUT (Default setting: 1 sec.).
Reactions: - NC Start disable in this channel.
- NC not ready.
- Channel not ready.
- NC Stop on alarm.
- Local alarm reaction.
- Alarm display.
- Interface signals are set.
Remedy: • Please inform the authorized personnel/service department. The monitoring time in
MD 10120 PLC_RUNNINGUP_TIMEOUT must be checked and adapted to the first
OB1 cycle.
• Establish the cause of error in the PLC (loop or stop in the user program) and eliminate.
Program Continuation: Switch control OFF - ON.
2100 NCK battery warning threshold reached
Definitions: The undervoltage monitor of the NCK battery has reached the prewarning threshold. This
is at 2.7-2.9V (nominal voltage of the battery is 3.0-3.1V at 950mAh).
Reactions: - Alarm display.
Remedy: Please inform the authorized personnel/service department. The battery must be
replaced within the next 6 weeks. After this period, the voltage can drop below the alarm
limit of 2.4-2.6V if the RAMs to be buffered take up a lot of current.
Program Continuation: Clear alarm with the Delete key or NC START.
2101 NCK battery alarm
Definitions: The undervoltage monitoring (2.4-2.6V) of the NCK battery has responded during cyclic
operation.
Reactions: - Alarm display.
Remedy: If the NCK battery is replaced without interrupting the power supply, no data will be lost.
This means that production can continue without taking any further steps. (A buffer capac-
itor on the NCK holds the supply voltage for at least 30 minutes and the battery can be
replaced within this time even when the control is switched off).
Program Continuation: Clear alarm with the Delete key or NC START.