Spesifikasi CJ1W-NC[]71

General Specifications

Item	Specifications
Model	CJ1W-NC271/471/F71 (-MA)
Internal current consumption	360 mA max. at 5 V DC
Dimensions	31 × 90 × 65 mm (W × H × D)
Weight	95 g max.
Ambient operating temperature	0 to 55°C
Approved standards	CE, cULus, and C-tick

Specifications not listed above conform to general CJ Series specifications.

Functions and Specifications

Item		Specifications
Unit classification		CPU Bus Unit
Applicable PLCs		CJ Series
Possible unit number settings		0 to F
I/O  allocations	Common Operating Memory Area	Words allocated in CPU Bus Unit Area: 25 words (15 output words, 10 input words)
	Axis Operating  Memory Area	Allocated in one of the following areas (user-specified):  CIO, Work, Auxiliary, Holding, DM, or EM Area.  Number of words allocated: 50 words (25 output words, 25 input words) × Highest  axis No. used
Compatible devices		OMRON G5-series Servo Drives (Built-in MECHATROLINK-II communications)  OMRON G-series Servo Drives (Built-in MECHATROLINK-II communications)
Control method		Control commands executed using MECHATROLINK-II synchronous communications.
Maximum number of controlled  axes		CJ1W-NC271: 2 axes, CJ1W-NC471: 4 axes, CJ1W-NCF71: 16 axes
Control  units	Position command  unit	Command unit:Depends on the Electronic Gear Setting in the Servo Parameters.  Default setting: Pulses
	Speed command  unit for position  control	Command units/s
	Acceleration/  deceleration  speeds for position control	10,000 command units/s2
	Speed command  unit for speed  control	0.001% of the motor's momentary maximum rotation speed
	Torque command  unit for torque  control	0.001% of the motor's momentary maximum torque
Control  command  range	Position command  range	2,147,483,648 to 2,147,483,647 (command units)
	Speed command  range for position  control	0 to 2,147,483,647 (command units/s)
	Acceleration/  deceleration  speeds for position control	1 to 65,535 (10,000 command units/s2)
	Speed command  range for speed  control	-199.999% to 199.999%  The upper limit of the speed command range depends on the specifications of the  Servo Drive.
	Torque command  range for torque  control	-199.999% to 199.999%  The upper limit of the torque command range depends on the specifications of  the Servo Drive.
Control  functions	Servo lock/unlock	Creates (Servo lock) or releases (Servo unlock) the position loop on the PCU.
	Position control	Positions to an absolute position or relative position according to the target  position and target speed specified from the ladder program.
	Origin  determination	Origin search: Establishes the origin using the specified search method.  Present position preset: Changes the present position to a specified position to  establish the origin.  Origin return: Returns the axis from any position to the established origin.  Absolute encoder origin: Establishes the origin using a Servomotor that has an  absolute encoder, without having to use an origin search.
	Jogging	Outputs pulses at a fixed speed in the forward rotation or reverse rotation  direction.
	Interrupt feeding	Performs positioning by moving the axis a fixed amount when an external interrupt  input is received while the axis is moving.
	Speed control	Performs speed control by sending a command to the Servo Drive speed loop.
	Torque control	Performs torque control by sending a command to the Servo Drive current loop.
	Stop functions	Deceleration stop: Decelerates the moving axis to a stop.  Emergency stop: Positions the moving axis for the number of pulses remaining in  the deviation counter and then stops the axis.
Auxiliary  functions	Acceleration/  deceleration  curves	Sets one of the following: a trapezoidal (linear) curve, an exponential curve, or an  S-curve (moving average).
	Torque limit	Restricts the output torque during axis operation.
	Override	Multiplies the axis command speed by a specified ratio.  Override: 0.01% to 327.67%
	Servo parameter  transfer	Reads and writes the Servo Drive parameters from the ladder program in the CPU  Unit.
	Monitoring  function	Monitors the control status of the Servo Drive, such as the command coordinate  positions, feedback position, current speed, and torque.
	Software limits	Limits software operation within the positioning range during position control.
	Backlash  compensation	Compensates for the amount of play in the mechanical system according to a set  value.
	Deviation counter  reset	The position deviation in the Servo Drive's deviation counter can be reset to 0  (unit version 1.3 or later).
External  I/O	Position Control  Unit	One MECHATROLINK-II interface port
	Servo Drive I/O	Forward/reverse rotation limit inputs, origin proximity inputs, external interrupt  inputs 1 to 3 (can be used as external origin inputs)
Self-diagnostic functions		Watchdog, flash memory check, memory corruption check
Error detection functions		Overtravel, Servo Drive alarm detection, CPU error, MECHATROLINK  communications error, Unit setting error

MECHATROLINK Specifications

Item	Specifications
Communications protocol	MECHATROLINK-II
Baud rate	10 Mbps
Maximum transmission distance	50 m *1
Minimum distance between stations	0.5 m
Transmission media	Shielded, twisted-pair cables
Maximum No. of stations	30 slave stations max. *2
Topology	Bus
Transfer cycle	250 μs to 8 ms
Communications method	Master-slave, totally synchronous
Encoding	Manchester encoding
Data length	17 bytes/32 bytes selectable *3

*1. This distance is the total length of the cable connected between devices. However, the maximum length depends on 
       the number of devices connected and whether Repeaters are used. 
*2. Up to 16 devices can be connected to the CJ1W-NCF71(-MA), up to 2 devices can be connected to the CJ1W-NC271, 
       and up to 4 devices can be connected to the CJ1W-NC471. 
*3. The PCU data length is fixed at 32 bytes.