2. System Function 2.1.1. COM Port COM1 （ RS-232 ） COM1, RS-232 communication port possessed by PLC module, supports Modbus protocol and could serve as Modbus master (supporting MODRW, RS instructions) or slave to upload and download programs, monitor PLC device, and connect human-machine interface and etc. COM1 Pin Definition: COM2 （ RS-485 ） COM2, RS-485 communication port supporting Modbus protocol, is the hardware port commonly used by motion control module and PLC. The motion control module or PLC can be accessed through different node ID. Their node ID must be different from each other. If COM2 is used by PLC, 10MC could be regarded as Modbus master or slave.
If COM2 is used by motion control module, 10MC could only serve as Modbus slave to download CANopen motion control network configuration, program, G codes and monitor devices. COM2 Pin Definition: Note: Please refer to appendix A for more details on Modbus. CANopen Bus Interface There are two RJ45 ports for CANopen bus interface and the standard CAN communication cable (TAP-CB03/TAP-CB05/TAP-CB10) is needed for user to create a reliable motion control network conveniently and quickly. CAN bus need be added with two terminal resistors in its two terminals to constitute the network and Delta supplies the standard terminal resistance module (TAP-TR01).
There are two terminal resistors enclosed in the package of 10MC product. 2-2 DVP-MC operating manual Pin Signal Description 1, 2 +5V 5V power positive pole 3 GND Grounding 4 Rx Receiving data 5 TX Sending data 6 GND Grounding 7 NC Reserved 8 GND Grounding Pin Signal Description 1 + Signal+ 2 _ Signal- 3 SG Grounding Pin Signal Explanation 1 CAN H _ Signal+ 2 CAN L _ Signal- 3 CAN GND _ Grounding 4 RESE 1 _ Reserved 5 RESE 2 _ Reserved 6 CAN SHLD _ Shielded cable 7 CAN GND _ Grounding 8 RESE 3 _ Reserved