13.20.1.2
NC-specific machine data
Number
Identifier: $MN_
10100
PLC_CYCLIC_TIMEOUT
14504
MAXNUM_USER_DATA_INT
14506
MAXNUM_USER_DATA_HEX
14508
MAXNUM_USER_DATA_FLOAT
14510
USER_DATA_INT
14512
USER_DATA_HEX
14514
USER_DATA_FLOAT[n]
Note
Machine data in integer/hex format is operated in the NC as DWORD. A machine data in
floating point format is managed in the NC as FLOAT (8-byte IEEE). They are stored only in
the NC/PLC interface and can be read by the PLC user program from DB20 even when the
PLC boots.
13.20.1.3
Channelspecific machine data
Number
Identifier: $MC_
28150
MM_NUM_VDIVAR_ELEMENTS
13.20.2
Signals
13.20.2.1
Signals from operator panel
Signal name
Active SINUMERIK operating area
Current screen number
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
P3: Basic PLC program for SINUMERIK 840D sl
Description
Cyclic PLC monitoring time
Number of user data (INT)
Number of user data (HEX)
Number of user data (FLOAT)
User data (INT)
User data (HEX)
User data (FLOAT)
Description
Number of elements for writing PLC variables
SINUMERIK 840D sl
DB19.DB21
DB19.DBW24
13.20 Data lists
SINUMERIK 828D
DB1900.DBB1
DB1900.DBW4
1077