H2: Auxiliary function outputs to PLC
8.16 Supplementary conditions
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
465
8.16.2 Output behavior
Thread cutting
During active thread cutting G33, G34 and G35, the following output behavior is always active for the spindle-
specific auxiliary functions:
• M3 (spindle right)
• M4 (spindle left)
:
• Output duration one OB40 cycle (quick acknowledgment)
• Output during motion
The spindle-specific auxiliary function M5 (spindle stop) is always output at the end of the block. The parts
program block that contains M5 is always ended with exact stop, i.e. even during active continuous path mode.
Synchronized actions
With output auxiliary functions from synchronized actions, the parameterized output behavior is ignored except
for the following parameters:
• Bit0: Output duration one OB1 cycle (normal acknowledgment)
• Bit1: Output duration one OB40 cycle (quick acknowledgment)
Auxiliary functions: M17 or M2 / M30 (end of subroutine)
In its own parts program block
If one of the auxiliary functions M17, M2 or M30 is programmed as the only auxiliary function in a part program
block and an axis is still in motion, the auxiliary function is not output to the PLC until after the axis has stopped.
Overriding the parameterized output behavior
The parameterized output behavior of the auxiliary functions M17 or M2/M30 is overridden by the output behavior
that is determined in the following machine data:
MD20800 $MC_SPF_END_TO_VDI, Bit 0 (subprogram end / stop to PLC)
Bi
t
Value Description
0 0 The auxiliary functions M17 or M2/M30 (subprogram end) are not output to the PLC.
Continuous-path mode is not interrupted at the end of the subroutine
1 The auxiliary functions M17 or M2/M30 (subprogram end) are output to the PLC.
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