5.2 HWBB Function
5.2.8 Operation without a Host Controller
5-10
5.2.8
Operation without a Host Controller
The HWBB function will operate even for operation without a host controller.
However, if the HWBB function operates during execution of the following functions, leave the
execution mode for the function and then enter it again to restart operation. Do this for both
axis A and axis B. Operation will not be restarted simply by turning OFF the /HWBB1 and /
HWBB2 signals.
5.2.9
/S-RDY (Servo Ready Output) Signal
The SV_ON (Servo ON: 31 hex) command will not be acknowledged in the HWBB state. There-
fore, the Servo Ready Output Signal will turn OFF.
The Servo Ready Output Signal will turn ON if both the /HWBB1 and /HWBB2 signals are ON
and the servo is turned OFF (BB state).
An example is provided below for when the main circuit power supply is ON and the SENS_ON
(Turn Sensor ON) command is input when there is no servo alarm. (An absolute encoder is
used in this example.) The same operation is performed for axis A and axis B.
Applicable
Functions
Resetting the HWBB State
•
Jogging
•
Origin search
•
Program jogging
•
Automatic adjust-
ment without host
reference
•
EasyFFT
•
Adjustment of
motor current
detection signal
offset
/HWBB1
/HWBB2
S
ERVOPACK
s
tatu
s
for axi
s
A
Function execution
mode for axi
s
A
Function execution
mode for axi
s
B
S
ERVOPACK
s
tatu
s
for axi
s
B
OFF (motor current
s
hut-OFF reque
s
t)
ON
(normal operation)
ON
(normal operation)
Not function
execution mode
Function
execution mode
Function
execution mode
Not function
execution mode
Function
execution mode
Function
execution mode
HWBB
s
tate
BB
s
tate
Operating
s
tate
Operating
s
tate
HWBB
s
tate
BB
s
tate
Operating
s
tate
Operating
s
tate
The following example uses the
Σ
-7W SERVOPACK with MECHATROLINK-III commands. If you
use a
Σ
-7C SERVOPACK, you will need to use Controller Section commands instead of MECHA-
TROLINK-III commands.
Important
/HWBB1
/HWBB2
ON
OFF
OFF
ON (normal
operation)
S
ervo ON
S
ERVOPACK
S
tatu
s
/
S
-RDY (
S
ervo
Ready Output
S
ignal)
Operating
s
tate
ON
HWBB
s
tate
BB
s
tate
ON
OFF (motor current
s
hut-OFF reque
s
t)
ON (normal
operation)
