Setting MBUS Parameters

Procedure

1. Set access parameters.
   • Set parameters for the built-in MBUS and click Submit.
   Figure 6-36 Setting parameters for the built-in MBUS
   

   Parameter	Description
   Built-in MBUS	If the SmartLogger communicates with the solar inverter using a built-in MBUS, set this parameter to Enable. If only RS485 communication is used between the SmartLogger and the solar inverter and third-party device, set this parameter to Disable.
   Device disconnection time	Specifies the duration for determining device disconnection.

   • Set access parameters for an external MBUS.
     • Method 1: Click Auto. Search to connect the MBUS.
     • Method 2: Click Add Devices, set access parameters, and click Add Devices.
   Figure 6-37 Setting access parameters for an external MBUS
   

   Parameter	Description
   Device type	Set this parameter to MBUS.
   Port number	Set this parameter to the serial number of the COM port connected to the MBUS.

2. Set networking parameters.
   • Set parameters for the built-in MBUS networking.
   Figure 6-38 Setting the built-in MBUS networking
   

   Category	Parameter	Description
   Running Param.	Anti-crosstalk	Set this parameter to Enable. When the transformer substation number and winding number of the solar inverter are the same as those of the MBUS, or the solar inverter SN is in the SN list, the solar inverter can connect to the SmartLogger over an MBUS network.
   	Network frequency band	Set this parameter as required.
   	Box-type transformer No.	Set this parameter based on the number of the transformer substation connected to the SmartLogger.
   	Winding No.	In multi-split transformer substation scenarios, set this parameter based on the number of the winding of the transformer station connected to the SmartLogger.
   	Networking	When the SmartLogger communicates with the solar inverter over MBUS, set Networking to Enable. When the SmartLogger communicates with the solar inverter only over RS485, set Networking to Disable.
   	Power settings	This parameter is used to adjust the transmit power of MBUS signals. A larger value indicates a higher transmit power and better networking capability. The default value is 8 (NA is displayed). You can set this parameter based on actual requirements.
   	Transmit mode	Set this parameter to Single-phase in the power grid fast control scenario and to Three-phase in other scenarios. If this parameter is set to Single-phase, ensure that the MBUS three-phase AC power cable connection of the SmartLogger is the same as that of the inverter. Otherwise, the inverter communication may be disconnected or some commands may be lost.
   	Fast control frame type	Frame type used by the MBUS module for power grid fast control. The MBUS module adaptively selects FC frame or Common frame.
   SN List	N/A	Maintain the solar inverter SN list. You can click Synchronize to synchronize the transformer substation number and winding number of the MBUS to the solar inverters in the SN list.

   • Set parameters for the external MBUS networking.
   Figure 6-39 Setting the external MBUS networking
   

   Category	Parameter	Description
   Running Param.	Baud rate	Retain the default value 115200 for optimal communications performance.
   	Anti-crosstalk	Set this parameter to Enable. When the transformer substation number and winding number of the solar inverter are the same as those of the MBUS, or the solar inverter SN is in the SN list, the solar inverter can connect to the SmartLogger over an MBUS network.
   	Network frequency band	Set this parameter as required.
   	Box-type transformer No.	Set this parameter based on the number of the transformer substation connected to the SmartLogger.
   	Winding No.	In multi-split transformer substation scenarios, set this parameter based on the number of the winding of the transformer station connected to the SmartLogger.
   	Networking	When the SmartLogger communicates with the solar inverter over MBUS, set Networking to Enable. When the SmartLogger communicates with the solar inverter only over RS485, set Networking to Disable.
   	Power settings	This parameter is used to adjust the transmit power of MBUS signals. A larger value indicates a higher transmit power and better networking capability. The default value is 8 (NA is displayed). You can set this parameter based on actual requirements.
   	Transmit mode	Set this parameter to Single-phase in the power grid fast control scenario and to Three-phase in other scenarios. If this parameter is set to Single-phase, ensure that the MBUS three-phase AC power cable connection of the SmartLogger is the same as that of the inverter. Otherwise, the inverter communication may be disconnected or some commands may be lost.
   	Network interface	This parameter is used to enable communication between the MBUS module and the SmartLogger network interface. The default value is Disable. Set this parameter to Enable only in the power grid fast control scenario. Ensure that the LAN interface on the SmartLogger or SmartModule is connected to the network interface on the MBUS module.
   	IP address	IP address of the MBUS module. The default value is 192.168.8.249. Change the value only when an IP address conflict occurs.
   	Fast control frame type	Frame type used by the MBUS module for power grid fast control. The MBUS module adaptively selects FC frame or Common frame.
   SN List	N/A	Maintain the solar inverter SN list. You can click Synchronize to synchronize the transformer substation number and winding number of the MBUS to the solar inverters in the SN list.