H/S: Manual handle/manual step feed mode input
When the H/S input contact is closed, and other mode input con-
tacts are opened, the control enters the manual handle mode (when
the control is provided with an optional manual pulse generator) or
the manual step feed mode, and the machine will be manually fed
by the manual pulse generator or fed in steps.
T: Tape operation mode
When the T input contact is closed and other mode input contacts
are opened, the control enters the tape operation mode, and the
machine will be controlled by the tape commands read by the tape
reader.
MDI: Manual data input operation mode input
When the MDI input contact is closed, and other mode input con-
tacts are opened, the control enters the manual data input mode, and
part programs will be written or the machine will be operated
through MDI.
MEM: Memory operation mode input
When the MEM input contact is closed, and other mode input con-
tacts are opened, the control enters the memory operation mode,
and the machine will be controlled by part programs stored in the
memory.
EDT: Program edit mode
When the EDT input contact is closed and other operation mode
input contacts are open, the control enters the program edit mode,
and it can store part programs into the memory, correct and change
them.
(2) Operation Mode Output
The control outputs the following signals to inform the current
operation mode.
AUT: Automatic operation mode output
This output signal is turned on when the control is in the T (tape
operation), MEM (memory operation), or MDI (manual data input
operation) mode.
MAN: Manual operation mode output
This output signal is turned on when the control is in the H/S (man-
ual handle/manual step operation mode) or JOG (manual jog mode.)
EDTS: Editing output
This output signal is turned on when the control is in the EDT
(program editing) mode, and also performing and editing operation
(part program reading, collation, punching, and stored program
changing and other processing).
Timing chart for input and output for control operation modes
are shown in Fig. 19.2
MEM
(INPUT)
MD!
(INPUT)
JOG
(INPUT)
EDT
(INPUT)
AUT
I
1+
I
IING-IN
; TAPE
;>
I I I
I
I
(OUTPUT)
I I
I
I
I
I
I
I
MAN
I
I
(OUTPUT)
I
I
(
EDTS
--i--i-
(OUTPUT)
Fig. 19.2
Notes :
1. When any operation-mode-input except manual operation mode is
given during NC program operation in the moemory operation
mode, the control stops the execution of the part program after the
execution of the current block. The same applies to the part
program operation in the tape and MDI modes.
2. When a manual-operation-mode-input contact is closed during the
execution of a part program in the memory operation mode, the
following changes take place.
Motion command
The current motion stops after deceleration, and the program is
interrupted. The remaining program can be restarted when the
automatic operation mode is turned on again and the cycle start (ST)
input contact is closed.
M, S, T command
The sampling outputs (MF, SF, TF) and the M code outputs are
turned off, and the M, S, T command is regarded to have been
executed completely.
Even when the control is returned to the automatic operation mode,
the interrupted M, S, T command is not resumed.
The above applies to S2-digit commands. S4-digit commands do not
have sampling output.
3. When an automatic operation mode or program editing mode input
contact is closed during motion in the manual operation mode, the
motion decelerates and stops.
4. When any of these operation mode input contacts is closed, that
mode becomes effective. Under other input states, the previous
operation mode remains effective. When no operation-mode-input-
contact is closed after the energization, or when two or more
operation mode input contacts are closed, the control enters the
manualjog mode.
106
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