
B-65280EN/05 FANUC BUILT-IN SPINDLE MOTOR Bis series 3.I/O SIGNALS (CNC ↔ PMC)
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3.1.2 Explanation of Input Signals
The signals whose names are not listed in Subsection 3.1.1, "List of
Input Signals", in Part IV are not supported by the Bis series spindle.
Symbol Name Description
TLMLA, B
Torque limitation
command LOW
These signals limit the output torque of the spindle motor.
The limit value is set in spindle parameter No. 4025.
TLML TLMH
TLMHA, B
Torque limitation
command HIGH
0 0 : Torque not limited
0 1 : Limited to the parameter-set value
1 0 : Limited to about half of the parameter-set value
1 1 : Limited to about half of the parameter-set value
CTH1A, B
CHT2A, B
Clutch/gear signal
These signals set the conditions listed below according to the clutch or gear
status.
The signals can also be used for selecting spindle control parameters.
The names such as HIGH GEAR are given for convenience, and the
correspondence to the actual gears is free.
CTH1 CTH2
0 0 : HIGH GEAR
0 1 : MEDIUM HIGH GEAR
1 0 : MEDIUM LOW GEAR
1 1 : LOW GEAR
SRVA, B
Reverse rotation
command
These signals set the rotation direction of the spindle motor when viewed from
the shaft side.
SFRA, B
Forward rotation
command
SRV SFR
0 0 : Stopped
0 1 : Forward rotation (CCW: Counterclockwise direction)
1 0 : Reverse rotation (CW: Clockwise direction)
1 1 : Stopped
ORCMA, B
Spindle orientation
command
This signal is used to perform spindle orientation control.
0: Turns off the spindle orientation command.
1: Performs spindle orientation control.
MRDYA, B Machine ready signal
0: Motor excitation is off.
1: Ready for operation
ARSTA, B
Spindle alarm reset
signal
This signal is used to reset spindle alarms.
32 msec min.
“1” An alarm is reset when the signal status changes from "1" to
“0” "0".
*ESPA, B Emergency stop signal
0: Emergency stop
1: Normal operation
SOCNA, B Soft start/stop signal
0: Disables the soft start/stop function.
1: Enables the soft start/stop function.
INTGA, B
Velocity integral control
signal
0: Enables velocity integral control.
1: Disables velocity integral control.
INDXA, B
Orientation stop
position change
command
This signal is used in orientation with the stop position set
external setting type. When the status of this signal changes
from "1" to "0", new position stop data is input, and a
movement to the new position then a stop take place.
ROTAA, B
Rotation direction
command at orientation
stop position change
This signal is used in orientation with the stop position set external setting type.
0: CCW (counterclockwise)
1: CW (clockwise)
“1”
“0”