Siemens SINUMERIK 840D Function Manual

Detailed description
2.12 Block descriptions
Basic logic functions: PLC Basic program powerline (P3 pl)
178 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Structure for ring buffer
TITLE =
//Ring buffer DB for FB 29
VERSION : 1.0
STRUCT
Field: ARRAY [0 .. 249 ] OF STRUCT //can be any size of this struct
Cycle : INT ; //Delta cycle to last storage in buffer
Signal_1 : BOOL ; //Signal names same as FB 29
Signal_2 : BOOL ;
Signal_3 : BOOL ;
Signal_4 : BOOL ;
Signal_5 : BOOL ;
Signal_6 : BOOL ;
Signal_7 : BOOL ;
Signal_8 : BOOL ;
Var1 : BYTE ;
Var2 : WORD ;
Var3 : WORD ;
END_STRUCT;
END_STRUCT;
BEGIN
END_DATA_BLOCK

Siemens SINUMERIK 840D Specifications

General

Series	SINUMERIK 840D
Axes	Up to 31
Channels	Up to 10
Operating System	Windows-based
Power Supply	24 V DC
Control Unit Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
Interpolation	Spline
PLC	Integrated PLC
Data Storage	CompactFlash, USB