Mitsubishi PLC control stepper motor is as follows:
Case number one:
Wiring diagram
The wiring of the above figure is to control a stepper motor wiring. This time to show you a method of controlling two steps simultaneously.
IO table
X0 steps 1 original
X1 step 2 original point
X2 boot button
Y0 step 1 pulse
Y1 step 1 direction
Y2 step 2 pulse
Y3 step 2 direction
2. Control Process: Press the start button, the two stepper motors are reset, and the two stepper motor movement after the reset is completed to the specified position, the movement ends.
3. The procedure is as follows:
Press the start button, the two stepper motors start reset, the M11 controls the step motor 1 reset, the M12 controls the step motor 2 reset.
Stepping motor 1 is reset, M13 is a reset completion flag.
Stepping motor 2 is reset, M14 is a reset completion flag.
After the two stepper motors are reset, start the stepper motor movement to the designated target, the M15 control stepping motor 1, M16 Control Step Motor 2
Stepper motor 1 sports, M17 is a motion completion mark
Stepper motor 2 sports, M18 is a motion symbol
After the end of the two stepper motors, the end, waiting for the next start, repeat the action.
Case 2:
Task
There is a set of stepped drive systems on a device. The model of the stepped drive is SH-2H042MA. The model number of stepping motor is 17HS111, which is two-phase four-wire DC 24V step motor, requires: When the button SB1 is pressed, stepper The motor drives the mechanism reset in the X direction, stops when the X direction is close to the switch SQ1, and the reset is completed.
Main software and hardware configuration
A.1 set GX Developer V8.86;
B.1 The model of the motor is 17 hs111;
C.1 Type Step The model is SH-2H042MA;
D.1 set FX2N-32MT PLC.
Described Programming - Directive High Speed Pulse Output Instruction
The high-speed pulse output function implements pulse output and pulse width modulation function on the specified output point of the PLC. The FX series PLC is equipped with two high-speed output points (3 high-speed output points starting from FX3U). The PLS instruction format of the pulse output command (PLSY / DPLSY) is shown in the table below.
Pulse output command (PLSY / DPLSY) outputs a bread wave (50% duty cycle, as shown in Figure 1-1 below). This instruction can be used to specify the frequency, generate a quantitative pulse output, S1 ·] for specifying the frequency, the range is 2 to 20 kHz; [S2 ·] is used to specify the number of pulses, the designated range of 16-bit instructions (PLSY) is 1 The designated range of ~ 32767, 32-bit instructions (DPLSY) is 1 to 2147483647, [D.] The address used to specify the output of the output, limited to the Y000 and Y001 of the transistor output (for FX2N and previous products). When X1 closed closes, Y000 emits a high speed pulse. When X1 is disconnected, Y000 stops output. Output pulses are stored in D8137 and D8136.
Equipment wiring
Stepping Motor and Stepping Driver Wiring This system is a stepping motor that is two-phase four-wire stepping motor whose model is 17HS111, which is shown in Figure 1-3.
Its meaning is: 4 of the steps of steps are red, green, yellow, and blue; where red leads should be connected to the A terminal terminal of the stepped drive, the green leader should be connected to the stepped terminal of the stepped drive. The yellow leads should be connected to the B terminal block of the stepped drive, and the blue lead line should be associated with the B-terminal terminal of the stepped drive.
PLC and stepper motor, the wiring step drive of the stepper driver has two kinds of joints, which is related to the control signal, usually the Mitsubishi series PLC output signal is a 0V signal (ie NPN connection), so it should Using a common male connection, the common mailing method is the shortcoming of the Dir + and CP + of the stepper driver and the positive electrode of the power supply, as shown in Figure 1-3. Incidentally, the Siemens' PLC output is a high level signal (ie, PNP connection), so a common coating should be used.
【key point】
1. The output of Mitsubishi FX3U has an NPN and PNP type. When selecting, it is necessary to determine the output form, FX2N and previous products are NPN output.
2, PLC cannot be directly connected to the step drive! Because the control signal of the stepper driver is + 5V, the output signal of Mitsubishi PLC is usually + 24V, which is obviously not matched. The solution to the problem is that one 2kΩ resistor is connected in series between the PLC and the stepping drive, so the input signal is approximately equal to + 5V. (Some data indicate a 2kΩ resistor in series to control the input current at about 10 mA, which is the limit stream, the meaning of the current limit or partial pressure of the resistance here is essentially the same.) Of course, There is also a way to pick up + 5V DC on the PLC's COM1 terminal block, and the problem is inconvenient!
3, CP + (CP-) is a pulse terminal block, and DIR + (DIR-) is a directional control signal terminal terminal.
4, the input wiring is an NPN connection, so the two proximity switches are NPN types, and PNP will not be used.
Required program
As shown below:, read the full text
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