SRV-63 series AC servo drives Communication
-230-
torque command is P4.14, the speed feedback is R0.21, the position feedback is R0.02 and the
torque feedback is R0.06.
The meaning of each bit in CW (control word) is listed below:
Bit
Function
Abbreviation in English
0
Control mode switching
MODE_SWITCH
1
Gain switching
GAIN_SWITCH
2
Inertia ratio switching
JRATIO_SWITCH
3
Torque limit switching
TRQLIMIT_SWITCH
4
Zero speed clamp
ZCLAMP
5
Retention pulse clearing
POSERR_CLEAR
6
Vibration control switching input
VIB_SUB
7
Reserved
RESERVED
8
Digital input block (0: CN1 digital input is valid;
CN1 digital input is invalid, CW valid)
SERVO_DI_INH
9
Servo enable
SERVO_ON
10
Fault clearing
FAULT_CLEAR
11
Emergency stop
EMEGENCY
12
Positive direction drive disabled
POT(POSITIVE_LIMIT)
13
Negative direction drive disabled
NOT(NAGETIVE_LIMIT)
14
HOME switch signal
HOME_SINGAL
15
HOME trigger
HOME_TRIGGER
*
1
When Bit8 is set to 0, the internal software of the drive will use digital input as the source of the
corresponding function; when it is 1, the digital input is shielded and the corresponding control bit is
used as the function source.
The meaning of each bit in SW (state word) is listed as below:
Bit
Function
Abbreviation in English
0
Speed matching
SPD_COIN
1
Speed reaching
SPD_AT
2
Speed limiting
SPD_LIMITING
3
Speed command
SPD_CMD_VALID
4
Speed zero output
SPD_ZERO
5
Torque limiting
TRQ_LIMITING
6
Zeroing finished
HOME_END
7
PZD in control
PZD_CONTROLING
8
Servo ready output *
1
READY
9
Servo running output
RUN
10
Fault output
FAULT
11
Alarm output
ALARM
12
External brake release
BREAK_OFF
13
Position command
POS_CMD_VALID
14
Positioning finished
POS_COIN
15
Control mode switching state
MODE_CHANGE_STATUS