Take OCZ for example. OCA and OCB interface circuits have the same wiring mode. Fig. 3-15 Wiring diagram of the open-collector frequency division output terminal 3.5 CN2 and CN3 communication terminal wiring The driver is connected to the upper computer through the two identical communication signal connectors CN2 and CN3 connected in parallel inside of it; the user may operate the driver by MODBUS communication; the communication distance is about 15m. Table 3-10 Description of the communication connector pins Fig.
3-16 Wiring of communication terminals 34 Technical Manual for EA190 Series Servo Driver V100 Caution☞ 1.Do connect the signal power ground of the upper computer with the driver GND, and use a twisted shielded pair to reduce noise disturbance. 2.The maximum voltage tolerance of the triode inside the driver is DC30V, and the maximum allowable input current is 40mA.
Signal name Pin number Function Pin distribution of the terminal RS485+ 1 RS485 communication port RS485- 2 GND 3 RS485/RS232 communication reference ground RS232-RXD 4 The transmitting terminal of RS232 connects to the receiving terminal of the upper computer RS232-TXD 5 The receiving terminal of RS232 connects to the transmitting terminal of the upper computer 6 7 8