3 - 22
3. SIGNALS AND WIRING
(2) Input signals
Signal
Symbol
Connec-
tor pin No.
Functions/Applications
I/O
division
Control
mode
P
S
T
Forward rotation
pulse train
Reverse rotation
pulse train
PP
NP
PG
NG
CN1-23
CN1-25
CN1-22
CN1-24
Used to input command pulses.
In the open collector system (max. input frequency 200kpps)
Forward rotation pulse train across PP-DOCOM
Reverse rotation pulse train across NP-DOCOM
If the command pulse train input is open collector method, it supports
only to the sink (NPN) type interface.
It does not correspond to the source (PNP) type interface.
In the differential receiver system (max. input frequency 1Mpps)
Forward rotation pulse train across PG-PP
Reverse rotation pulse train across NG-NP
The command input pulse form can be changed using parameter No.
PA13.
DI-2
Note. For the internal speed control mode or the internal torque control mode, PP or NP cannot be assigned to the CN1-23 pin or CN1-
25 pin. When assigning an input device to the CN1-23 pin or CN1-25 pin, supply OPC with 24VDC ( ) and use it at the sink
interface. It cannot be used at the source interface.
(3) Output signals
Signal
Symbol
Connec-
tor pin No.
Functions/Applications
I/O
division
Control
mode
P
S
T
Encoder Z-phase
pulse
(Open collector)
OP
CN1-21 Outputs the zero-point signal of the encoder. One pulse is output per
servo motor revolution. OP turns on when the zero-point position is
reached. (Negative logic)
The minimum pulse width is about 400 s. For home position return using
this pulse, set the creep speed to 100r/min. or less.
DO-2
Encoder A-phase
pulse
(Differential line
driver)
LA
LAR
CN1-15
CN1-16
Outputs pulses per servo motor revolution set in parameter No. PA15 in
the differential line driver system. In CCW rotation of the servo motor, the
encoder B-phase pulse lags the encoder A-phase pulse by a phase
angle of /2.
The relationships between rotation direction and phase difference of the
A- and B-phase pulses can be changed using parameter No. PC13.
DO-2
Encoder B-phase
pulse
(Differential line
driver)
LB
LBR
CN1-17
CN1-18
Encoder Z-phase
pulse
(Differential line
driver)
LZ
LZR
CN1-19
CN1-20
The same signal as OP is output in the differential line driver system.
DO-2