YASKAWA YASNAC J50 Connecting Manual page 166

20.2.48 TOOL LIFE CONTROL SIGNALS (TLCTN,
TLSKP, TLRST, TL4-TL64, TLCHA, TLCHB) (Cent'd)
(1) Tool Life Neglect Input (TLCTN = #13 124)
Tool life count stop in closing TLCTN signal during tool life
control. Count function is applied only to the opening tool life
neglect in the tool life set by time, frequency, or distance.
(2) Tool Skip Input (TLSKP = #13 123)
This input is used when forcing change of a tool before the end
of its life. Either (a) or (b) below before operation can be used
by changing over parameter #6020 D7.
(a) Close tool skip input TLSKP after externally specifying the
group number under the tool. With this operation, the group
specified for skipping select the next tool at the next T code
command.
(b) Set tool skip input close whithout specifying the group number.
In this case, the current group number is specified.
(3) Tool Exchage Signal (TLCHA = #12055) and Tool Reset
SignalL (TLRST = 13122)
The tool exchange signal (TLCHA) is closed when the life of all
tools in one group is reached. In this case, the life count STS
information is cleared by externally closing the tool exchange
reset signal (TLRST).
NOTE
1. Although the TLCHA signal is output at the point where the end of
tool life has been reached (when controlling life with time and
distance), cutting continues.
2. The TLCHA signal is a signal that is output when the end of tool
has been reached on all tool in one group. Even if tool change reset
of a certain group is executed with the TLRST signal, the TLCHA
signal remain closed, if there is even one other group in witch the
end of tool life has been reached.
3. The TLRST signal is disregarded when it is closed during
automatic operation (STL) or during feed hold (SPL).
4. When the TLRST signal is closed, the group in witch information
is to be cleared is setting (#6024) or specified by the external input
(TL1-TL64).
Selection of the alternative will be made with parameter #6020D5.
(4) New Tool Selection Signal
(TLCHB = #12054)
When moving to a new tool within one group and, when the
USED display of the new tool number is "O," the T code of that
tool is output together with the new tool selection signal
TLCHB,
Timing is shown in Fig. 20.32.
PARAMETER #6220
Fig. 20.32
(5) Tool Group Number Input
(TL1 - TL64 = #13290 - #13296)
When inputting tool exchange reset signal TLRST and tool skip
signal TLSKP, tool group number should be previously
specified with tool number signal from TL1 to TL64. In this
case,
"the value of the tool group number to be commanded -1"
is commanded with a binary number. During tool change reset,
the tool group can be specified by setting (#6204) instead of
using this vafue as input.