Siemens SINUMERIK 808D ADVANCED Training Manual page 90

PLC program
design and
adjustment
PLC alarm
System provides users with 128 PLC user alarms. Every user alarm has
a corresponding NCK address bit:DB1600.DBX0.0 ~ DB1600.DBX15.7
The address bit "1" can activate the corresponding alarm, reset "0" can
cancel the alarm.
In PLC cross reference，you can find the reason for the PLC alarm
through looking up reference addresses to make corresponding
modification.
Alarm
PLC signal PLC alarm variable
number
700000 DB1600.DBX0.0 DB16000.DBD1000 MD14516[0]
...... ...... ......
700016 DB1600.DBX2.0 DB16000.DBD1064 MD14516[16]
700018 DB1600.DBX2.2 DB16000.DBD1072 MD14516[17]
...... ...... ......
DB1600.DBX15.
700127 DB16000.DBD1508
7
Commissioning Guide
Conditions of alarm cancel/reset.
power-on clear ：
cancel key
cancel key or reset key, then the alarm will be cancelled .
After the cancel of alarm, the alarm displayed will disappear by itself.
Alarm reaction.
React by two ways after alarm
PLC reaction：the PLC program detects the reaction through the
corresponding PLC interface, such as cancel the axis-enable when giving
Alarm attrib- Alarm
an alarm.
ute setup text
NC reaction：every alarm has a 8 configuration MD14516[0]~ [127].you
can set a cancelation condition and alarm reaction of every alarm
according to current condition. The system makes corresponding reaction
...... ......
when the alarm begins.
Driver is
not ready
Coolant
motor
overload
...... ......
User
MD14516
alarm
[127]
127
Page 90
after the cancel of alarm, you need to re-power it on
or ： after the cancel of alarm, you need to use the
MD14516[n]
bit 7 6
Power off/on
Reset or cancel key
Alarm reset /cancel condition
s
alarm
NC start inhibit
5 4 3 2 1 0
Read-in disable
Feed disable
Emergency
PLC stop
808D ADVANCED Turning and Milling