
B-63494EN/02 5.I/O SIGNALS
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CAUTION
1 The safety speed and safety position selection
signal are safety signals, so that these signals are
input via the two paths, namely, via the PMC and
FSSB. Each signal input via the two paths is
monitored for a mismatch by the CNC and monitor
in dual mode.
2 When a signal input via either of the two paths is
set to 0, the signal is assumed to be set to 0. Only
when a signal input via both paths is set to 1, the
signal is assumed to be set to 1.
3 With 1-CPU 2-path control and 2-CPU 3-path
control, the addresses of some signals input via the
FSSB are modified. For details, see Subsection
5.3.3 and Subsection 5.3.4.
4 Before switching these signals, stop the feed axis
and spindle.
Safety Position Switch signal
SDS01 to SPS32 <F336 to F339> <DO+002 to DO+005>
[Classification] Output signal
[Function] This signal notifies that the machine position of the axis specified by
the safety parameter (No.13880 to No.13911) is within the range
specified by the safety parameter (No.13920 to No.13951, No.13960
to No.13991). The table below indicates the maximum allowable
number of signal points for each tool post.
Tool
post 1
Tool
post 2
Tool
post 3
Applicable system
1-path control 32 (8) - -
Series
16
i/18i/21i-TB/MB,
Series 18
i-MB5
2-CPU 2-path
control
32 (8) 32 (8) -
Series 16i/18
i-TB,
Series 16
i-MB
1-CPU 2-path
control
16 (8) 16 (0) -
Series 16
i/18i-TB
2-CPU 3-path
control
32 (8) 16 (8) 16 (0)
Series 16
i-TB
NOTE
The parenthesized values are applicable when the
FSSB I/O module (extension) is not used.
[Output condition] In the following case, this signal is set to “1”.
• The machine position of the axis is within the specified range.
In the following case, this signal is set to “0”.
• The machine position of the axis is out of the specified range.
[Remarks] When the axis is just on the boundary of the range (machine position
is equal to parameter setting value), it is regarded that the machine
position is within the range.