Siemens SINUMERIK 840D sl Function Manual page 656

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27099 Double assignment in the SPL assignment MD %1[%2] - MD %3[%4]
Parameter %1 = MD name 1
%2 = MD field index for MD name 1
%3 = MD name 2
%4 = MD field index for MD name 2
Explanation SPL inputs ($A_INSE) have been assigned twice by various applications in the displayed machine data.
These can be:
- PROFIsafe communication
- F_DP communication
Possibly involved machine data:
%1 and %3:
- MD10388 $MN_PROFISAFE_IN_ASSIGN
- MD13346 $MN_SAFE_RDP_ASSIGN
Response Alarm display
Remedy Correct the displayed MD.
Program con‐ Switch control system OFF and ON again.
tinuation
27100 At least one axis is not safely referenced
Parameter
Explanation There are two reasons for this alarm:
● the machine position of at least one of the axes monitored with SI has not been acknowledged by the
user or
● the machine position of at least one of the axes monitored with SI has still not been verified by subsequent
referencing
Even if the axis is already referenced there is no acknowledgement that referencing has supplied the correct
result. For example, incorrect results can occur if the axis was moved after the control was powered-down -
with the result that the stop position saved prior to powering-down is no longer correct.
To ensure that this does not happen, the user must acknowledge the displayed actual position after the first
referencing operation. After the user agreement has been set for the first time, the axis must be subsequently
referenced each time that the control is booted (with absolute encoders, this subsequent referencing is au‐
tomatically executed). This procedure is carried out to verify the stop position saved prior to powering-down
the control.
The alarm display can be set in MD10094 $MN_SAFE_ALARM_SUPPRESS_LEVEL (MD < 3) in such a way
that incorrect referencing is displayed separately for each axis.
Response Alarm display
The SGA "axis safely referenced" is not set. SE is disabled if the safe actual position has not yet been
acknowledged by the user agreement. If the user agreement is set, SE remains active. The Safe Cams are
calculated and output, but their significance is limited because referencing has not been acknowledged.
Remedy Move all of the SI axes to the known positions and change into the "Referencing" mode. Check the positions
on the machine displayed in the user agreement screen and set the "User agreement" using the selection/
toggle key.
If the user agreement has already been set for the axis, then re-reference the axes. The user agreement can
only be changed in key-actuated switch setting 3 or after entering a password.
Program con‐ The alarm is no longer displayed when the alarm cause has been removed. No other operator actions are
tinuation required
656
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated