
15. PMC CONTROL FUNCTION
B–63523EN–1/03
1874
The abnormal end signal (MCSP) is not output when stopping in feed
hold or single block. Under such a condition, when the cycle start signal
(ST) is turned on and off, the continuity of the macro program is executed.
Under such a condition, even if macro call start signal (MCSTx) is turned
on and off, it is not effective.
Under such a condition, when reset or emergency stop are input, the
operation which is described in Item ”Interruption by reset or emergency
stop” is executed.
When the execution of macro program is stopped by alarm, the abnormal
end signal (MCSP) is output.
Under such a condition, when reset or the emergency stop are input, the
operation which is described in Item ”Interruption by reset or emergency
stop” is executed.
Following Fig.15.7(b) shows the timing chart of each signal when the
sequence is interrupted by alarm.
MCST
(PMC→CNC)
MCRQ
(CNC→PMC)
Mode notification
signal (CNC→PMC)
Mode Change
process (PMC)
MCFIN
(PMC→CNC)
Mode
MCEXE
(CNC→PMC)
MCEXx
(CNC→PMC)
Program Execution
(CNC)
Least 32ms
MEM
Before macro execution
MEM
Indefinite
Before macro execution
AL (Alarm)
(CNC→PMC)
MCSP (CNC→PMC)
Reset
Fig.15.7(b) Timing chart of abnormal end
D Feed hold or single
block
D Stop by alarm