Siemens SINUMERIK 828D

P4: PLC for SINUMERIK 828D
14.1 Overview
Basic Functions
1090 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
14.1.2.5 PLC machine data
The PLC machine data are in the NCK machine data area. At POWER ON, this data is transferred by the PLC
firmware into DB4500 of the PLC user interface where it can be evaluated by the PLC user program.
References
SINUMERIK 828D Parameter Manual
14.1.3 PLC key data
The integrated PLC has a program memory of 24000 PLC operations, which are completely executed in one
fixed PLC cycle.
A maximum of 500 operations can be executed in the INT0 interrupt program that can be optionally used. It is
executed servo-synchronous and allows the fastest possible reaction to process events. This is the reason that
interrupt-capable PLC I/O modules are not required.
Data Number Special features
Main program (MAIN) 1
Subprograms (SBRx) 256
Interrupts 2
Time controlled interrupt 1 Servo-synchronous interrupt program
Alarms/messages 248
Bit memory 4096 Non-retentive
Counter 64 Non-retentive
Timers,
of which:
128 Non-retentive
10ms increment interval 112
100ms increment interval 16
User data block each with a max. of
512bytes
64 Address range DB9000 to DB9063
Data transmission NCK ↔ PLC Via fixed parameterizable interface