P4: PLC for SINUMERIK 828D
14.6 Function interface
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1169
Variables interface of the user alarms
Each user alarm can be given a variable as parameter. One double word each is reserved for this purpose in the
variable interface from offset 1000. As a consequence, valid offsets must be divisible by 4.
Alarm response and cancel criterion
These two terms involve the conception and configuration of user alarms. For each alarm, it can be defined
• as to how the control should respond when it occurs (alarm response),
• what has to be undertaken in order to clear the alarm again, to acknowledge it (clear criterion). The clear
criterion simultaneously defines the alarm priority.
Although two different subjects, their setpoints are configured together in one machine data and their actual
values are signaled together in one byte of the user interface. This byte is structured as follows:
The setpoints are configured bit-coded in machine data MD14516[x], 0 ≤ x ≤ 247; whereby x = user alarm
number - 700000
References:
Parameter Manual SINUMERIK828D
The codings of the clear criteria and the corresponding priorities are:
DB1600 Variable for alarm [r32/w32]
Data block PLC -> HMI interface
DBD 1000 Variable for alarm 700000
DBD 1004 Variable for alarm 700001
DBD 1008 Variable for alarm 700002
...
DBD 1980 Variable for alarm 700245
DBD 1984 Variable for alarm 700246
DBD 1988 Variable for alarm 700247
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
POWER ON Interrupt with
DB1600
DBX3000.0
PLC STOP EMERGENC
Y STOP
Feedrate
disable for all
axes
Read-in
disable
NC start
disable
Clearing criterion Alarm response
Bit 7 Bit 6 User alarm is acknowledged by Type Priority
0 0 Resetting of the activation bit Message Low
0 1 Acknowledgement in DB1600.DBX3000.0 (refer
below)
Alarm Medium
1 0 Power on Alarm High
1 1 Reserved (internally evaluated as {1, 0})
To Next Page
Loading...
Need help?
General
