
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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2.3.77 Teach–in (recorded) mode and signals
When the tool is moved to a desired position by manual continuous feed, incremental feed, or manual handle
feed, the absolute coordinates of the position can be placed in memory as a program command. After all ma-
chining positions are sequentially stored as program commands, the playback function machines a workpiece
according to them.
The teach–in mode is the operation mode in which the absolute coordinates of the current tool position can
be placed (recorded) in memory as a program command. In the teach–in mode, the tool can be moved by
manual feed as well. The teach–in mode can be classified into five operation modes according to the type of
manual feed permitted:
(1) Teach–in manual continuous feed
(2) Teach–in incremental feed
(3) Teach–in manual handle feed
(4) Simultaneous operation of teach–in manual continuous feed and teach–in manual handle feed
(5) Simultaneous operation of teach–in incremental feed and teach–in manual handle feed
The table below shows how the five operation modes can be selected by input signals for selecting the
operation mode.
Mode selection input signal
T D MEM EDT MOVL TCHIN H S J AGJ
Teach–in
manual
continuous
feed
0 0 0 1 0 1 0 0 1 0
Teach–in
incremental
feed
0 0 0 1 0 1 0 1 0 0
Teach–in
manual
handle feed
0 0 0 1 0 1 1 0 0 0
Simultaneous
operation of
teach–in
manual con–
tinuous feed
and teach–in
manual
handle feed
0 0 0 1 0 1 1 0 1 0
Simultaneous
operation of
teach–in
incremental
feed and
teach–in
manual
handle feed
0 0 0 1 0 1 1 1 0 0
(a) Teach–in selection signal: TCHIN
[Classification]
Input signal
[Function] Selects a teach–in operation mode. It allows one of the following: teach–in manual continu-
ous feed, teach–in incremental feed, teach–in manual handle feed, simultaneous operation
of teach–in manual continuous feed and teach–in manual handle feed, and simultaneous op-
eration of teach–in incremental feed and teach–in manual handle feed. See the mode selec-
tion table.
(b) Teach–in selection check signal: MTCHIN
[Classification]
Output signal
[Function] Informs that a teach–in operation mode is selected.