Data Lists; Machine Data; 1Nc-Specific Machine Data; 2Channel­specific Machine Data - Siemens SINUMERIK 828D Function Manual

P3: Basic PLC Program for SINUMERIK 840D sl

13.16 Data lists

13.16 Data lists
13.16.1

Machine data

13.16.1.1 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 DB 20 even during
PLC booting.
13.16.1.2 Channel­specific machine data
Number Identifier: $MC_
28150 MM_NUM_VDIVAR_ELEMENTS
1086
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
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions