4 Connect to converter
4.1 Power supply
GCAN-4055 support +9-30V DC power supply. We recommend to use 12V or 24V DC voltage-stabilized power supply.
4.2 Connect to CAN-Bus
En el uso práctico, conectando CAN_H a CAN_H y CAN_L a CAN_L, se puede realizar la comunicación.
Note: The CAN-Bus network adopts topological structure, only the two furthest terminal need to connect 120Ω terminal resistance between CAN_H and CAN_L. See figure 3.2.
![](http://gcanbus.com/wp-content/uploads/2021/12/1-1P30509592R13.png)
4.3 System LED
GCAN-4055 has one PWR indicator, one COM indicator, one CAN indicator to indicate the converter status. More functions are shown in table 3.2.
![](http://gcanbus.com/wp-content/uploads/2021/12/1-1P305095950138.png)
5 Application example
Note: All slave station in this chapter are set to 1.
This chapter will use USBCAN-II Pro converter and ECANTools software to receive and send CAN-Bus data.
You are welcome to purchase it through contact information in the last page of this manual. You can connect USBCAN-II Pro converter CAN1 channel to the CAN-Bus channel of Gcan-4055. Then open the ECANTools software and select the correct baud rate.
5.1 Start command
GCAN-4055 will send one frame to master station.
Frame ID is 0x700+Node ID(X). Length of the data is 1. Frame data is 0x00.
![](http://gcanbus.com/wp-content/uploads/2021/12/1-1P305100034140.png)
For example, GCAN-4055 will automatically send a data when it starts.
USBCAN-II Pro converter can receive this data and display it, as shown in figure 5.1.
![](http://gcanbus.com/wp-content/uploads/2021/12/1-1P305100144916.png)
5.2 NMT command(Network management)
Users can use the NMT command of CANopen master station or manually simulate the CANopen protocol to control the GCAN-4055 to start or stop. Manual simulation of CANopen protocol start up module data is shown in the following table.
![](http://gcanbus.com/wp-content/uploads/2021/12/1-1P305100109432.png)