
B–63785EN/01
4. INTERFACE BETWEEN THE NC AND PMC
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This function lets you enter and view parameters for the timer, counter,
keep relay, and data table, which are all battery–powered memory.
To use this function, click the [PMCPRM] soft key in the PMC basic
menu.
Usually, it is impossible to enter PMC parameters because of protection.
To enable parameter entry, use either of the following methods:
D This method is used if the sequence program is running (RUN), that
is, usually when the machine is operating.
(i) Place the NC in the MDI mode or bring it to an emergency stop
state.
(ii) Enter 1 for “PWE” on the NC setting screen.
(iii) Alternatively, set the program protect signal (KEY4) to 1 (only
for the counter and data table).
(iv) Protection is canceled, enabling parameter entry.
PWE KEY4
Timer f
Counter f f
Keep relay f
Data table f f
(v) After completing parameter entry, reset “PWE” or the KEY4
signal to the previous state.
D This method is used if the sequence program can be stopped (STOP),
for example, during sequence program debugging.
(i) Stop the sequence program.
(ii) Protection is canceled, enabling parameter entry.
WARNING
If the sequence program is stopped when the machine is
operating, the machine may behave in an unexpected
fashion. Before stopping the sequence program, ensure
that there is none near the machine and that the tool or
workpiece will not hit the machine. Incorrect handling may
cause death or injury to the operator and damage the tool,
workpiece, and machine.
An attempt to specify a parameter when protection is active results in the
error message “WRITE PROTECT” being displayed.
4.3.4
PMC Data Setting and
Display (PMCPRM)
4.3.4.1
Overview
4.3.4.2
PMC parameter entry
method