Specifications

A - 44
EIA
Refers to the EIA codes (EIA Standards)
punched into the paper punch paper to instruct
machining to the NC unit.
In addition to NC language, ISO Codes (ISO
Standards) and JIS Codes (JIS Standards) can
be used.
EIA CODE
Tape code established by the Electronic
Industries Association used for paper punching
tape used with NC control machines.
Configured of eight tracks containing 6 bits
indicating the information, an odd parity bit and
EOB character (End Of Block).
ELECTROMAGNETIC BRAKE
This function is supplied on motors with
electromagnetic brakes. Electromagnetic
brakes are used to prevent slipping during
power failures and faults when driving a
vertical axis, or as a protective function when
the machine is stopped.
These brakes are activated when not excited.
ELECTRONIC GEAR
Function that allows the feed amount per feed
pulse to be freely changed during positioning.
The feed pulse and feedback pulse ratio, or P
rate, is selected according to the machine, but
this allows the setting to be made regardless of
the machine system.
PLG
1000P
+
–1000P500P
Motor
Feed pulse
Electro-
nic
gear
Deviation counter
Feedback pulse
EMERGENCY STOP
Emergency stop or a program to safety stop is
placed in the PLC program. In addition, a
circuit must be provided outside the PLC to
ensure that the system stops.
This is provided because the emergency stop
could be invalidated in the sequence program
because of an unexpected PLC fault or
because of the PLC power ON/OFF timing.
Disconnection and contact faults can be easily
detected by using a b contact for the input
device.
Using the EMG signal is recommended.
EMG SIGNAL
Emergency stop for all axes using a b contact
for the external switch. This switch is always
ON.
When operated, all axes will stop, the external
emergency stop input flag (M9076) will turn
OFF, and the motor will coast.
Caution is required during use as the address
will deviate.