Siemens SINUMERIK 840Di Diagnostic Manual page 435

11/2006
26106 Encoder %2 of axis %1 not found
Parameters: %1 = Axis name, spindle number
%2 = Encoder number
Definitions: The drive configured for the specified axis could not be found. For example, a Profibus slave was
configured on the NC but is not contained in SDB-Type-2000.
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Possible causes:
- $MA_ENC_TYPE not equal to 0 as a result of an oversight; the encoder should actually be simulated
(= 0).
- $MA_ENC_MODULE_NR entered incorrectly, i.e. the logical drive numbers were exchanged and an
invalid value is stored for this drive in $MN_DRIVE_LOGIC_ADDRESS (see next paragraph) or a
drive number which does not exist on the bus was entered (check the number for slaves, for example).
- $MN_DRIVE_LOGIC_ADDRESS contains values which were not configured on the Profibus (i.e. the
values are not in SDB-Type-2000) or different addresses were selected for the input and output slots
of the drive in the Profibus configuration.
Program Switch control OFF - ON.
Continuation:
26110 Independent drive stop/retract triggered
Definitions: Informational alarm: An "independent extended stop or retract" was triggered on the drive bus for at
least one axis. The drive in question subsequently ignores NC travel commands. The bus must be
rebooted (hardware reset).
Reaction: NC not ready.
The NC switches to follow-up mode.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Reboot the drive, hardware reset.
Program Switch control OFF - ON.
Continuation:
26120 Channel %1 axis %2 $AA_ESR_ENABLE = 1 but axis should be set to
NEUTRAL
Parameters: %1 = Channel
%2 = Axis, spindle
Definitions: One axis with ESR configuration and $AA_ESR_ENABLE[Achse] = 1 should be set to NEUTRAL.
However, neutral axes (apart from single axes) cannot execute an ESR.
Reaction: Alarm display.
Remedy: Set $AA_ESR_ENABLE[Achse] = 0 before setting axis to NEUTRAL.
Alarm can be suppressed via $MN_ALARM_SUPPRESS_MASK_2 bit 6 = 1.
Program Clear alarm with the Delete key or NC START.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-435