Reference Information
Windows Automation Center, WinAC Slot Version 4.0
Hardware Installation and Operating Manual, Edition 02/2006, A5E00273194-02
171
9.8
List of Abbreviations
Abbreviations
Description
CP
Communications processor
CPU
Central processing unit
DB
Data block
FB
Function block
FC
Function
FM
Function module
GD
Global data communication
IM
Interface module
LAD
Ladder logic
LWL
Fiber-optic cable
M
Ground connection
MPI
Multipoint interface
OB
Organization block
OP
Operator panel
POI
Process output image
PII
Process input image
PG
Programming device
PLC
Programmable logic controller
PS
Power supply
PZF
I/O area access error
SFB
System function block
SFC
System function
SM
Signal module
STL
Statement List (STEP 7 notation)