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5 POSITIONING DEDICATED SIGNALS
(b) The state of the stop signal input (STOP) of the Q172LX when the STOP
signal input is ON/OFF is shown below.
STOP signal : ON
Q172LX
STOP
STOP
COM
STOP signal : OFF
Q172LX
STOP
STOP
COM
(13) DOG/CHANGE signal (M2414+20n)
(a) This signal turns on/off by the proximity dog input (DOG) of the Q172LX at
the home position return.
(b) "Normally open contact input" and "Normally closed contact input" of the
system setting can be selected.
DOG signal : ON
Q172LX
DOG
DOG
COM
DOG signal : OFF
Q172LX
DOG
DOG
COM
(14) Servo ready signal (M2415+20n)
(a) This signal turns on when the servo amplifiers connected to each axis are in
the READY state.
(b) This signal turns off in the following cases.
• M2042 is off
• Servo amplifier is not installed
• Servo parameter is not set
• It is received the forced stop input from an external source
• Servo OFF by the servo OFF command (M3215+20n) on
• Servo error occurs
Refer to APPENDIX 2.4 "Servo errors" for details.
Q61P Q02H
CPU
Q38B
Communication is normal
Servo ready signal : ON
M
Q172
LX
Q172
CPU
(N)
AMP
M
AMP
POINT
When the part of multiple servo amplifiers connected to the SSCNET becomes a
servo error, only an applicable axis becomes the servo OFF state.
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