Siemens SINUMERIK 840D sl Function Manual page 859

The assignments have been made as follows:
UDT assignments
UDT number
UDT2
UDT10
UDT11
UDT19
UDT21
UDT31
UDT71
UDT72
UDT73
UDT77
UDT1002
UDT 1071
UDT 1072
UDT 1073
To symbolically program the interface signals, the interface data blocks must first be
symbolically assigned using the symbol editor.
For example, symbol "AxisX" is assigned to operand DB31 with data type UDT31 in the symbol
file.
After this input, the STEP 7 program can be programmed in symbols for this interface.
Note
Programs generated with an earlier software version that utilize the interface DBs described
above can also be converted into symbol programs. A fully qualified command for data access
e.g. "U DB31.DBX60.0" is then necessary for (spindle / no axis) in the program created till now.
This command is converted upon activation of the symbolics in the editor "AxisX.E_SpKA".
Description
Abbreviated symbolic names of the interface signals are defined in the two STL files
NST_UDTB.AWL and TM_UDTB.AWL.
In order to create the reference to the names of the interface signals, the name is included in
the comment after each signal.
The names are based on the English language. The comments are in English.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Assignment to interface DB
DB2
DB10
DB11
DB19
DB21 to DB30
DB31 to 61
DB71
DB72
DB73
DB77
DB2
DB 1071
DB 1072
DB 1073
P3: Basic PLC program for SINUMERIK 840D sl
13.10 Structure and functions of the basic program
Meaning
Alarms/messages
NCK signals
Mode group signals
HMI signals
Channel signal
Axis/spindle signals
Tool management: Load/unload locations
Tool management: Change in spindle
Tool management: Change in revolver
MCP and HHU signals with standard SDB 210
Extended alarms / messages (FB1 parameter "Ex‐
tendAlMsg:=TRUE")
Tool management: Loading/unloading points (mul‐
titool)
Tool management: Change in spindle (multitool)
Tool management: Change in turret (multitool)
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