Seimens technical term

siemens technical term

Term	Description	Explanation
C7	Combo PLC/HMI system	A PLC and screen in one package
CFC	Continuous Function Chart	Optional programming language
CP	Communication Processor	Modules used for special communication protocols
DB	Data Block	Memory storage areas for user data
FB	Function Block	A function with it's own data block
FBD	Function Block Diagram	Standard programming language
FC	Function Call	Called progammed blocks
FM	Function Module	Modules with special functions (e.g. positioning)
GSD	Generic Station Description	Files used for Profibus descriptions
HiGraph		Optional programming language
IM	Interface Module	Modules to connect remote racks
LAD	Ladder Logic Diagram	Standard programming language
M7	Programmable modules	A module with processing capabilities
MMC	Micro Memory Card	Compact plug-in memory card
MPI	Multi Point Interface	Standard communication protocol
OB	Organization Block	Blocks for user programs based on different operating system events.
OP	Operator Panel	Simple display with or without buttons
PCS	Process Control System	Software for the entire process chain
PG	Programming Terminal	Dedicated Siemens device - basically a PC
PPI	Point to Point Interface	Serial RS-232 communication
Profibus DP	Profibus Decentral Peripherals	Networking protocol used for factory automation
Profibus PA	Profibus Process Automation	Networking protocol used for process automation
S7		SIMATIC Step 7 product line
SCL	Structured Control Language	Optional programming language
SFB	System Function Block	Integrated FB for CPU information
SFC	System Function Call	Integrated FC for CPU information
SM	Signal Module	Standard Input/Output modules
STL	Statement List	Text based programming language
TP	Touch Panel	Touch screen display
UDT	User-Definded Data Type	Special data structures defined by the user
VAT	Variable Access Table	Tables used to monitor/modify values in the PLC

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