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7 PLC Description
7.1
PLC start-up
Tool box
PLC memory
Download PLC
program
7-160
OB 100
Î Î Î
Restart
OB 1
Î Î Î
Cyclic
Î Î Î Î
Î Î Î
processing
OB 40
Î Î Î
Process
Î Î Î
alarm
Î Î Î
Fig. 7-1
Structure of the basic program
The basic PLC program is an integral component of the SINUMERIK 840D tool
box.
Set the "PLC memory" option if necessary.
There are two ways to download the finished PLC program:
1. Load, test and change the PLC program with SIMATIC STEP7 HiGraph
(also see Readme file on the basic program disk).
2. Download an archived PLC program with PCIN or from the HMI
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
FB 1
Start
User
program
NCK
FC 2
Mode group
Channel
BP OB 1
Axis
Spindle
FC 14
MSTT,
BHG
FC 6
Tool man.
(not FMNC)
FC 19/25
MSTT:
User
MCP_IFM
program
MCP_IFT
FC 7/8/22
WZV:
TM_Trans
TM_Dir
FC 17
Star/delta
FC 10
Error and
operational
messages
FC 3
G group
BP_PRAL
distributor
User
program
© Siemens AG 2006 All Rights Reserved
03/2006
FC (9/15/16/18)
ASUP,
con. axes/
spindles
FB 2/3/4
Read/
write var.
PI services
FC 13
BHG:
display cont.
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