LNC-M600 Leading Numerical Controller Maintenance Manual

LNC-M600
MLC Maintenance -- C,S Bits and Register
4.4 C Bits Description
C Bit 000
Description:
Cycle Start
Assumed the system is under MEM or MDI mode. When the signal changes from OFF to On,
the system will be ready to be【Cycle Start】 condition. Meanwhile, the S BIT 000 signal will be
set to ON in order to provide LADDER to enable work light ON function during machine
running. On the other hand, assumed system is in【F-HOLD】 or 【B-STOP】 condition, the S
BIT 000 will be set to OFF in order to provide LADDER to enable work light OFF function during
machine stop. However, this signal will not be accepted by the system under the below three
conditions:
a. System is not under MEM or MDI mode.
b. System is in 【NC NOT Ready】 or 【Cycle Start】 condition.
c. System alarm occurs.
C Bit 001
Description:
Feed Hold
Assumed the system is in MEM or MDI mode and also in【NC Ready】 conditions. When this
signal is ON, the system will be in 【F-HOLD】 condition. Meanwhile, the system will set S BIT
000 signal to OFF in order to provide LADDER to enable work light OFF function during
machine running. And also, to set S BIT 001 signal to ON in order to provide LADDER to
enable work light ON function during machine stop. But, please notice that this signal is
disabled (ineffective) for PMC axis function under JOG or RAPID mode.
C Bit 003
Description:
Prog Protect
When this signal is set to ON, part program editing is prohibited.
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