Plc User Program - Siemens SINUMERIK 840Di Manual

06.03
8.2.3

PLC user program

 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
The organization blocks:
S
OB100 (cold restart)
S
OB1 (cyclic processing)
S
OB40 (process alarm)
contain the entry points for the appropriate parts of the PLC user program.
OB 100
Restart
OB 1
Cyclic
processing
OB 40
Process alarm
Fig. 8-1 Structure of PLC program
FB 1
Start
User
program
NCK
FC 2
Mode grp.
Channel
GP–OB 1
Axis
Spindle
FC 14
MCP,
HHU
FC 6
TOOLMAN
(not FMNC)
FC 19/25
MCP:
User
MCP_IFM
program
MCP_IFT
FC 7/8/22
TM:
TM_Trans
TM_Dir
FC 17
Star/delta
FC 10
Error and
operational
messages
FC 3
G group
GP_PRAL
distributor
User
program
8 PLC Start-Up
8.2 PLC program
FC (9/15/16/18)
ASUB,
con. axes/
spindles
FB 2/3/4
Read/ write
var., PI
services
FC 13
HHU:
Display
control
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