
37
5.1.1 Explanation
of Signal Names
This section explains the names of signals and gives a function overview of each signal.
The explanation of signal operation timings provided later on refers to the signal names.
Category Signal
name
Signal
abbreviation
Function overview
Start
CSTR
Movement is started at a rise edge of this signal.
Servo ON
SON
The servo remains ON while this signal is ON.
The servo remains OFF while this signal is OFF.
Alarm reset
RES
An alarm is reset at a rise edge of this signal.
Home return
HOME
Home return operation is started at a rise edge of this signal.
Operation mode
MODE
ON: Teaching mode, OFF: Normal mode
Current-position write
PWRT
When this signal has remained ON for 20 msec or longer, the
current position will be stored under the position number selected by
PC1 to PC8.
+Jog
JOG+
The actuator moves in the positive direction while this signal is ON.
–Jog
JOG-
The actuator moves in the negative direction while this signal is ON.
*Pause
*STP
ON: Actuator can be moved, OFF: Actuator decelerates to a stop
Input
Command position number PC1
PC2
PC4
PC8
PC16
PC32
The target position number is input.
A command position number must be specified by 6 ms before the
start signal (CSTR) turns ON.
Ready
SRDY
This signal is always output once the servo is turned ON and the
controller is ready to operate.
The signal is synchronized with the lit/unlit status of the “RUN” LED
on the front panel of the enclosure.
It is used by the PLC to determine when it can start operation.
Moving
MOVE
This signal turns ON while the actuator is moving, and turns OFF
while it is stopped.
It is used for operation check and also to determine whether the load
is contacted during push & hold operation.
Position complete
PEND
This signal turns ON when the target position was reached and the
actuator has entered the specified in-position range.
It is used to determine whether positioning has completed.
Home return completion
HEND
This signal is OFF immediately after the power is input, and turns
ON when home return has completed.
Zone ZONE1
ZONE2
This signal is output when home return has completed and the
current actuator position is inside the range set by the applicable
parameter.
It can be used as a limit switch at an intermediate point or as a
simple ruler during push & hold operation.
*Alarm
*ALM
This signal remains ON in normal conditions of use and turns OFF
when an alarm generates.
It is synchronized with the unlit/lit status of the corresponding LED
on the front panel of the enclosure.
Completed position number PM1
PM2
PM4
PM8
PM16
PM32
The relevant position number is output when positioning has
completed.
The signal will turn OFF when the next start signal is received.
It is used by the PLC to check if the commanded position has
definitively been reached, and also to provide a position interlock,
etc.
Current operation mode
MODES
ON: Teaching mode, OFF: Normal mode
*Emergency stop
*EMGS
This signal is enabled on a “built-in cutoff relay” controller.
OFF: Emergency stop has been actuated
Output
Write completion
WEND
This signal is output upon completion of writing to the nonvolatile
memory in response to a current-position write command (PWRT).