Siemens sinumerik 840D sl Function Manual page 544

Effect:
• $A_OUT[3] = 0 → Negative traversing direction disabled
• $A_OUT[3] = 1 → Negative traversing direction enabled
• $A_OUT[4] = 0 → Positive traversing direction disabled
• $A_OUT[4] = 1 → Positive traversing direction enabled
2.6.5 Voltage offset, can be set on a block-specific basis (CLC_VOFF)
Syntax
CLC_VOFF = V
Voltage offset
• Format: Real
• Unit: Volts
• Range of values: No restrictions
CLC_VOFF is an NC address and can therefore be written together with other instructions in
a part program block.
Functionality
CLC_VOFF can be used to preset a constant voltage offset for clearance control, which is
subtracted from the input voltage of the clearance sensor. The programmed voltage offset
therefore changes the setpoint distance between the workpiece and the clearance sensor or
offsets the operating point for clearance control.
The quantitative effect of the voltage offset is dependent on the additional parameters for
clearance control and can therefore not be standardized in a generally valid format.
Instant of activation
The voltage offset is effective in the part program block in which CLC_VOFF has been
programmed or, if this block does not contain any executable instructions, in the next part
program block with executable instructions.
Reset
Within a part program, a voltage offset must be reset by means of explicitly programming
CLC_VOFF=0.0.
RESET response
CLC_VOFF =0.0 becomes effective after a power on reset, NC RESET or end of program.
Special functions: Clearance Control (TE1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
oltage offset
Detailed description
2.6 Programming
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