Setting Meter Parameters
Setting DL/T645 Meter Parameters
Procedure
- Set access parameters and click Add Devices.Figure 6-63 Setting access parameters
Parameter
Description
Device Type Set this parameter to Power Meter.
Comm. Protocol Set this parameter to DL/T645.
Port number Set this parameter to the COM port connected to the meter.
Address Set this parameter to the communication address of the meter.
Table ID Set this parameter to the meter ID.
- Choose , set running parameters, and click Submit.
Parameter
Description
Protocol version Select DL/T645-2007 or DL/T645-1997 based on the protocol version of the meter.
Number of lead bytes Retain the default value unless otherwise specified.
Voltage change ratio - Set this parameter to 1 if the meter uploads the primary value.
- Set this parameter based on the actual transformer ratio if the meter uploads the secondary value.
Current change ratio Meter usage Meter usage: Meters include export+import meters, production meters, consumption meters, and external production meters. Export+import meter: used for grid-tied point control. Each array allows only one export+import meter to be connected. Production meter: PV output meter. Multiple production meters can be connected. Consumption meter: load consumption meter. Multiple consumption meters can be connected. External production meter: third-party PV output meter. Multiple external production meters can be connected.
Meter access direction [1]This switch is used when the physical wiring of the meter is reversely connected. You can adjust the software switch to avoid wiring reconstruction of the meter. Only the following three scenarios are supported. If the Meter access direction is incorrectly set, data will be incorrectly reported.
- Positive: The default value is Positive, which applies to the scenario where cables are correctly connected to the meter.
- Reverse: If the meter is reversely connected and the NMS does not support reverse connection, set this parameter to Reverse. The SmartLogger automatically adjusts the power and other data of the meter to ensure data accuracy for the plant and meter.
- Reverse_Report raw data: If the meter is reversely connected and the NMS supports reverse connection[2], set this parameter to Reverse_Report raw data. This parameter is valid only for Export+import meter. The SmartLogger reports the original data of the meter to the NMS, and the NMS adjusts the data such as power.
Note [1]: Meter access direction can be configured only in V300R001C00SPC609 and later, V800R021C10SPC140 and later, and V300R023C00 and later.
Note [2]: If cables are reversely connected to the meter and the NMS can correctly display the real-time data of the meter, it is considered that the NMS supports reverse connection. That is, the NMS reverses the active power, reactive power, power factor, phase A active power, phase B active power, and phase C active power, replaces the total positive active energy and total negative active energy with each other, and replaces the total positive reactive power and total negative reactive power with each other.
- When Meter access direction is set to Positive or Reverse, Electric meter power direction must be set to Positive. Electric meter power direction is set in the grid connection with limited power under active power control and power closed-loop control under reactive power control.
- When Meter access direction is set to Reverse_Report raw data, Electric meter power direction must be set to Reverse. Electric meter power direction is set in the grid connection with limited power under active power control and power closed-loop control under reactive power control.
Setting Modbus-RTU Meter Parameters
Procedure
- Set access parameters and click Add Devices.Figure 6-64 Setting access parameters
Parameter
Description
Device Type Set this parameter to Power Meter.
Comm. Protocol Set this parameter to Modbus-RTU.
Port number Set this parameter to the COM port connected to the meter.
Address Set this parameter to the communication address of the meter.
- Choose , set meter parameters, and click Submit.
- When the model of the connected meter is in the Intelligent Power Meter Type drop-down list, set the parameters as follows.
Parameter
Description
Intelligent Power Meter Type Set this parameter to the corresponding meter model.
Voltage change ratio - Set this parameter to 1 if the meter uploads the primary value.
- Set this parameter based on the actual transformer ratio if the meter uploads the secondary value.
Current change ratio Meter usage Meter usage: Meters include export+import meters, production meters, consumption meters, and external production meters. Export+import meter: used for grid-tied point control. Each array allows only one export+import meter to be connected. Production meter: PV output meter. Multiple production meters can be connected. Consumption meter: load consumption meter. Multiple consumption meters can be connected. External production meter: third-party PV output meter. Multiple external production meters can be connected.
Meter access direction [1]This switch is used when the physical wiring of the meter is reversely connected. You can adjust the software switch to avoid wiring reconstruction of the meter. Only the following three scenarios are supported. If the Meter access direction is incorrectly set, data will be incorrectly reported.
- Positive: The default value is Positive, which applies to the scenario where cables are correctly connected to the meter.
- Reverse: If the meter is reversely connected and the NMS does not support reverse connection, set this parameter to Reverse. The SmartLogger automatically adjusts the power and other data of the meter to ensure data accuracy for the plant and meter.
- Reverse_Report raw data: If the meter is reversely connected and the NMS supports reverse connection[2], set this parameter to Reverse_Report raw data. This parameter is valid only for Export+import meter. The SmartLogger reports the original data of the meter to the NMS, and the NMS adjusts the data such as power.
Note [1]: Meter access direction can be configured only in V300R001C00SPC609 and later, V800R021C10SPC140 and later, and V300R023C00 and later.
Note [2]: If cables are reversely connected to the meter and the NMS can correctly display the real-time data of the meter, it is considered that the NMS supports reverse connection. That is, the NMS reverses the active power, reactive power, power factor, phase A active power, phase B active power, and phase C active power, replaces the total positive active energy and total negative active energy with each other, and replaces the total positive reactive power and total negative reactive power with each other.
- When Meter access direction is set to Positive or Reverse, Electric meter power direction must be set to Positive. Electric meter power direction is set in the grid connection with limited power under active power control and power closed-loop control under reactive power control.
- When Meter access direction is set to Reverse_Report raw data, Electric meter power direction must be set to Reverse. Electric meter power direction is set in the grid connection with limited power under active power control and power closed-loop control under reactive power control.
- If the connected meter is of another model, set the parameters as follows.
Parameter
Description
Intelligent Power Meter Type Set this parameter to Other.
Read function code Read holding register 03H and Read input register 04H are supported. Set this parameter based on the vendor's protocol.
Read mode Multiple read and Single read are supported.
Word order Big endian and Little endian are supported. Set this parameter based on the vendor's protocol.
Start address When Read mode is set to Multiple read, set the start address.
End address When Read mode is set to Multiple read, set the end address.
Voltage change ratio - Set this parameter to 1 if the meter uploads the primary value.
- Set this parameter based on the actual transformer ratio if the meter uploads the secondary value.
Current change ratio Signal parameters NOTE:Signal parameters include Signal Name, Signal address, Number of Registers, Gain, Data Type, and Unit.
Set this parameter based on the vendor's protocol.
NOTE:If the power meter can collect a certain signal, set Signal address to the address of the corresponding register. If not, set Signal address to 65535.
