Siemens SINUMERIK 840D sl Function Manual page 1121

Alarm response and cancel criterion
Alarm response and cancel criterion
These two terms involve the conception and configuration of user alarms. The following
attributes can be specified for each alarm:
● Alarm response: How the controller responds when an error occurs.
● Cancel criterion: What must be done to cancel the alarm again or acknowledge it. The
cancel criterion simultaneously defines the alarm priority.
The setpoints are configured in the following machine data and their actual values are signaled
together in one byte of the user interface: The setpoints are configured bit-coded in:
MD14516[x], 0 ≤ x ≤ 247; whereby x = user alarm number - 700000
Active alarm response and cancel criterion
The present active alarm responses (i.e. the actual responses) and the active cancel criteria
can be globally read out from the interface:
DB1600 Active alarm response [r]
Byte Bit 7
DBB 2000 POWER
ON
DBB 2001
DBB 2002
DBB 2003
One bit is set if for at least one active alarm the corresponding response or the corresponding
cancel criterion is configured. It is canceled, if this response/cancel criterion is no longer
configured for any of the alarms present.
The codings of the cancel criteria and the corresponding priorities are:
Bit 7
0
0
1
1
Note
If none of bits 0 to 4 are set for an alarm/message in the machine data, then this defines that
it involves a so-called "display message" that has no effect on the system. This especially
indicates that also bits 6 and 7 of the corresponding machine data are evaluated.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Bit 6 Bit 5
Interrupt
with
DB1600
DBX3000.0
Bit 6 User alarm is acknowledged by
0 Resetting of the activation bit
1 Acknowledgement in DB1600.DBX3000.0 (refer be‐
low)
0 Power on
1 Reserved (internally evaluated as {1, 0})
Bit 4 Bit 3
PLC STOP Emergen‐
cy stop
P4: PLC for SINUMERIK 828D
14.6 Function interface
Bit 2 Bit 1
Feedrate Read-in
disable for disable
all axes
Type Priority
Message Low
Alarm Medium
Alarm High
Bit 0
NC start
disable
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