YASKAWA YASNAC J50 Connecting Manual page 115

19.2.12 OPTIONAL BLOCK DELETE (BDT, BDT2-
BDT9) INPUT
This input is for determining whether data between"/" and "EOB"
in a part program is executed or neglected when the part program
contains" /."
Table 19.6
Neglected Data between
BDT INPUT CLOSED
"/" or "/1" and "EOB"
(End of block)
BDT 2 INPUT CLOSED
",.2,,and '<~o~>,
BDT 3 INPUT CLOSED 4'/3"and "EOB"
BDT 4 INPUT CLOSED
"/4" and "EOB"
BDT 5 INPUT CLOSED
"/5" and "EOB"
BDT 6 INPUT CLOSED
"/6"
and
"EOB"
BDT 7 INPUT CLOSED
,'fl>,and "EOB>>
BDT 8 INPUT CLOSED
"/8" and "EOB"
BDT 9 INPUT CLOSED
"/9"
and
"EOB"
Notes :
1. Data can be neglected only when part programs are executed.
When storing or processing part programs, this input has no effect.
2. Whether data may be neglected or not depends on the state of the
optional block delete input relay when the block containing " /" in a
part program is stored in the buffer. Therefore, when controlhngthe
optional block delete input relay by an external circuit with the use of
the auxiliary function, take care to set the input state before the block
containing "/''i sstroredi nthebuffer.
19.2.13 MACHINE LOCK (MLK)AND DISPLAY LOCK
(DLK) INPUT
(1) Machine Lock (MLK) Input
This is the input for preventing the outputting of control output
pulses to the servo unit. While the MLK input contact is closed,
even when the logic circuit distributes pulses in the automatic
and manual operation modes, the machine does not move. As
the logic circuits distribute pulses, the current value display
changes with the instructions. If the MLK contact is closed or
opened during the automatic operation of the control, the
operation is not influenced until the start of the next block, and
during manual operation, until the end of the current motion,
(2) Display Lock (DLK) Input
This input is for preventing the output pulses of the control from
being displayed on the external current value display. While the
DLK input contact is closed, even when the machine is
19.2.14 DRY RUN (DRN) INPUT
This input is for changing the feedrates of the tools during the exe-
cution of part programs in the automatic mode to the rates selected
by the manual continuous feed selection inputs (FV1, 2, 4, 8 and
16).
While the DRN input contact is closed, the feedrates during the
execution of part programs in the automatic mode are changed from
the programmed ones to the ones selected by the manual continuous
feed selection inputs.
While the DRN input contact is closed, the feedrates in part pro-
gram execution in the automatic mode are the ones specified by the
manual continuous feed selection input signals, instead of the pro-
grammed one. (However, for thread cutting, programmed feedrates
remain effective.)
When the DRN input contact is closed or opened during the
automatic operation of the control, the following change takes
palce.
During mm/rev feeding: No change of feedrate for the current
block.
During mm/min feeding: Feedrate changes even during the current
block.
Notes :
1. When parameter RPDDRN (#6006 D2) is set to 1, while the DRN input
contact is closed, the feedrate in positioning command is changed to a
manual continuous feedrate.
2. When parameter SCRDRN (#6019 D5) is set to 1, while the DRN input
contact is closed, the feedrate is changed to a manual continuous feedrate.
19.2.15 CURRENT VALUE STORING (PST) INPUT
This input is for storing current values in the control.
When the PST input contact is closed, the control stores current
values (CRT screen POS display 1st area EXTERNAL) into the
internal memory, and the LED incorporated in the OFS key in the
MDI FUNCTION area flickers.
Then, it performs the following calculation on the offsets written by
MDI, and stores the result in the offset memory.
El
Values to be
written in
offset memory
Resetting operation
'E-a
(depressing RESET key on MDI panel, or
closing external reset input contact) cancels the current value
storing mode and stops the flickering of the LED.
controlled automatically or manually, the external current value
display (DRT. POS 1st display area "EXTERNAL," and
external 2-axes current value display) does not change,
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