Siemens SINUMERIK 840D Programming Manual

Motion synchronous actions
10.5 Technology cycles
Job planning
10-74 Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
10.5.7 IF check structures
Function
IF check structures can be used in synchronized actions for branches in the processing
sequence of technology cycles.
Programming
IF <condition>
$R1=1
[ELSE] ;optional
$R1=0
ENDIF
10.5.8 Jump instructions (GOTO, GOTOF, GOTOB)
Function
Jump instructions (GOTO, GOTOF, GOTOB) are possible in technology cycles. The
specified labels must be present in the subprograms to prevent alarms from being triggered.
Note
Labels and block numbers may only be constants.
Programming
Unconditional jumps
GOTO Label, block number
or
GOTOF Label, block number
or
GOTOB Label, block number

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