Siemens sinumerik 840D sl Function Manual page 320

Detailed description
2.5 Generic coupling
2.5.4.4 Block change behavior (CPBC)
The block change criterion can be used to specify under which conditions the block change
with activated coupling is to be permitted in the processing of the part program. The status of
the coupling influences the block change behavior. If the specified condition is not fulfilled,
the block change is disabled. The block change criterion is only evaluated with an active
coupling.
The block change criterion can be defined with the keyword CPBC or with the programming
command WAITC. The instruction programmed last is valid.
Programming with PCBC
Syntax:
Identifiers:
Functionality:
Block change
criterion:
Example:
CPBC[X2]="IPOSTOP"
100
CPBC[FAx]= "<block change criterion>"
Coupling Block Change Criterium
Defines block change criterion with active coupling.
Type: STRING
Range of values:
"NOC" Block change is performed irrespective of the
coupling status.
"IPOSTOP" Block change is performed with setpoint synchronism.
"COARSE" Block change is performed with actual value
synchronism "coarse".
"FINE" Block change is performed with actual value
synchronism "fine".
Default value: "NOC"
; Block change during processing of the parts program is
done with setpoint synchronism (with active coupling to
following axis X2).
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0