
B-63494EN/02 3.SAFETY FUNCTIONS
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The programmable safe-related I/O signal function operates according
to the sequence described below. See the figure (outline of this
function) provided on the previous page.
[a] The safe-related input signals (*ESP, *SMC, GDL, SGDn,
ORQn, OPT, safety speed/safety position selection signal, and 16
points of general signals) are input to the PMC via I/O Link #1
(X).
[b] A user program (ladder) on the PMC directly generates G191,
G334, and G335 from each signal (*ESP, *SMC, GDL, SGDn,
ORQn, OPT, safety speed/safety position selection signal, and 16
points of general signals)
(NOTE)
.
[c] The safe-related input signals (*ESP, *SMC, GDL, SGDn,
ORQn, OPT, safety speed/safety position selection signal, and 16
points of general signals) are input to the monitor via FSSB
I/O#2 (DI+000 to DI+007).
[d] The CNC CPU and the monitor CPU independently monitor the
safe-related input signals.
[e] A user program (ladder) on the PMC generates safe-related
output signals (8 points of general output signals) based on user
logic then outputs the signals to the machine via I/O Link #1 (Y)
and outputs the signals as G331 to the CNC.
[f] A user program on the C language executor generates
safe-related output signals (8 points of general output signals)
based on user logic (same logic as for the user program (ladder)
on the PMC) then transfers the signals to the monitor.
[g] The CNC CPU and the monitor CPU independently monitor the
safe-related output signals.
[h] The monitor CPU outputs the safe-related output signals (8
points of general output signals) to the machine via FSSB I/O #2
(DO+001).
[i] The monitor CPU monitors speed/position and so forth, and
creates signals such as MCF and a safety position switch signal.
[j] The monitor CPU outputs MCF and a safety position switch
signal to the machine via FSSB I/O#2 (DO+000, DO+002 to
DO+005).
[k] The CNC CPU monitors speed/position and so forth, and creates
LGDn, MCF, and a safety position switch signal.
[l] The CNC CPU outputs LGDn, MCF, and a safety position switch
signal to the PMC (F191, F336 to F339, F350).
[m] The PMC CPU outputs LGDn, MCF, and a safe position switch
signal to the machine via I/O Link #1 (Y).
NOTE
Ensure that user logic on the PMC side does not
use the machine instructions dependent on the
CNC CPU listed below. The reason is that the C
language executor uses the CNC CPU, so that if
the user logic on the PMC side uses the CNC CPU,
dual monitoring is disabled.
EXIN, AXCTL, DISPB, WINDR, WINDW