Parameter Settings For Clearance Control - Siemens SINUMERIK 840D sl Function Manual

TE1: Clearance control
11.5 Startup
Each machine data bit corresponds to a channel axis.
• Coordinate X = channel axis corresponding to bit a
• Coordinate Y = channel axis corresponding to bit b
• Coordinate Z = channel axis corresponding to bit c
with a < b < c
Current difference angle
The difference angle is the angle between the tool orientation vector and the compensation
vector. If the current difference angle of the clearance control is to be output in a system
variable $AC_PARAM[n], index n of the system variable should be entered in the following
machine data:
MD65530 $MC_CLC_PROG_ORI_ANGLE_AC_PARAM ()
Permissible limit angle
The permissible limit angle specifies the maximum difference angle allowed between the tool
orientation vector and the compensation vector. The limit angle is configured via the following
machine data:
MD65520 $MC_CLC_PROG_ORI_MAX_ANGLE ()
11.5.6

Parameter settings for clearance control

Part program identifiers
The following machine data must be parameterized for the declaration of the function-specific
part program identifiers CLC_GAIN and CLC_VOFF:
• MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB[0] = "OMA1" (list of re-configured
NC codes)
• MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB[1] = "CLC_GAIN"
• MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB[2] = "OMA2"
• MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB[3] = "CLC_VOFF"
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions