| 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 |
Tools for PLC programming
PCS 7
HELLO,
I have a question about the PCS 7!
I am learning a manual from SIEMENS which they describe some functions blocks in PCS 7 With the CFC editor !
my question are :
1 what is the difference between PCS7 and STEP7?
2. if the blocks functions are changed if I would use STEP 7 with the CFC library ?
3. any person does you use the CM 104 gateway from SIEMENS ?
THANK YOU
IEC61850
question
What is the differance between instance databloc & sheard data block
Please help.