Siemens SINUMERIK 840D Diagnostics Manual page 376

1 Alarms
Remedy:
Program Continuation:
26051
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
26052
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
26070
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
1-376
In following cases, the parameter block change is carried out via MD 31060 and
MD 31050 without an alarm, even with different load gear ratio settings:
1. In speed-controlled and follow-up mode.
2. With position control with the direct encoder.
3. With position control with the indirect encoder only within the position window
(MD 36500 > actual position > MD 36500).
Clear alarm with the RESET key. Restart part program
Channel %1 in block %2 unanticipated stop crossed in continuous path mode
%1 = Channel number
%2 = Block number, label
The path interpolation did not stop, as required, at the end of the block, but will only decel-
erate to a standstill in the next block. This error situation occurs if the stop at block change
was not planned by the path interpolation or was not detected early enough. A possible
cause is that the PLC changed the spindle speed when
$MA_SPIND_ON_SPEED_AT_IPO_START > 0, and the machine has to wait until the
spindle has returned to the setpoint range. Another possible cause is that a synchronized
action needs to be finished before the path interpolation continues. The alarm is only out-
put if $MN_TRACE_SELECT = 'H400'. The alarm output is normally suppressed.
$MN_TRACE_SELECT has SIEMENS password protection.
- Alarm display.
$MA_SPIND_ON_SPEED_AT_IPO_START = 1. Program G09 before the alarm output in
the block to allow the path interpolation to stop as planned.
Clear alarm with the Delete key or NC START.
Channel %1 in block %2: path velocity too high for auxiliary function output
%1 = Channel number
%2 = Block number, label
This alarm usually occurs in a block with auxiliary function output during a movement. In
this case, the wait for acknowledgement of the auxiliary function was longer than planned.
The alarm occurs if internal control inconsistencies cause continuous path mode (G64,
G641, ...) to be blocked unexpectedly.
The path interpolation stops abruptly at the end of the block indicated in the message
(regenerative stop). On the next block change, the path continues unless the abrupt stop
has caused an error in the position controller (e.g. because the $MA_CONTOUR_TOL
setting was over-sensitive).
- Alarm display.
• If the alarm occurred in a block with auxiliary function output during the movement: from
SW 5.1 or higher, increase machine $MN_PLC_CYCLE_TIME_AVERAGE or
• Program G09 in the block indicated in the message to allow the path interpolation to stop
as planned.
Clear alarm with the Delete key or NC START.
Channel %1 axis %2 cannot be controlled by the PLC, max. number exceeded
%1 = Channel number
%2 = Axis name, spindle number
An attempt has been made to control more axes than allowed from the PLC.
- Interface signals are set.
- Alarm display.
Check the machine data MD_NUM_MAX_PLC_CNTRL_AXES and correct if necessary
or reduce the number of PLC-controlled axes.
Clear alarm with the Delete key or NC START.
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04