# DL/T645-2007 DL/T 645-2007 is a multifunctional electric energy meter communication protocol used primarily in power systems for single-phase and three-phase meters. It supports various communication methods, including wired (e.g., RS-485) and wireless (e.g., GSM/GPRS). For the generic steps, see [Create a Southbound Driver](../south-devices.md) and [Groups and Tags](../../groups-tags/groups-tags.md). The EMQX Neuron DLT645-2007 driver provides connectivity with DL/T 645-2007 devices through serial ports and TCP. ## Add Driver On **Data Collection → South Devices**, click **Add Device**. - Name: The name of this device node. - Driver: Select the **DLT645-2007** driver. ## Connection Parameters Click the driver card to open the **Device Configuration** page and fill in: | Parameter | Description | | ---------------------- | ------------------------------------------------------------ | | **Physical Link** | Choose Serial or Ethernet connection mode. | | **Connection Timeout** | Timeout for sending requests to the device | | **Send Inteval** | Send read instruction interval(ms) | | **Serial Device** | Only for **Serial** mode, use a serial device, e.g. /dev/ttyUSB0 | | **Stop Bits** | Only for **Serial** mode, stop bits, default 1 | | **Parity** | Only for **Serial** mode, parity bit, default 2, which means even parity | | **Baud Rate** | Only for **Serial** mode, baud rate, default 9600 | | **Data Bits** | Only for **Serial** mode, byte size, default 8 | | **IP Address** | Only for **TCP** mode.
When EMQX Neuron is used as a client, fill in the IP of the remote device.
When EMQX Neuron is used as a server, fill in the IP of EMQX Neuron locally, 0.0.0.0 can be filled in by default. | | **Port** | Only for **TCP** mode.
When EMQX Neuron is used as a client, fill in the TCP port of the remote device.
When EMQX Neuron is used as a server, fill in the TCP port of EMQX Neuron | | **Connection Mode** | The way the driver connects to the device, the default is Client, which means that the neuron driver is used as the client. Options: Client, Server. | ## Tag Configuration The data types and address formats supported by this driver are listed below. ### Data Types * UIN8 * INT8 * UINT16 * INT16 * UINT32 * INT32 * UIN64 * INT64 :::tip Selecting the INT type automatically treats the first bit of the collected data as the sign bit. ::: ### Address Format > mail_address#DI3-DI2-DI1-DI0 * `mail_address` represents the mailing address of the meter. * DI3-DI2-DI1-DI0 represents the data identification, and all points only support read attributes, and expressed in hexadecimal. E.g 123456789012#02-01-01-00, represents the value of the A-phase voltage of the meter device with the mailing address 123456789012. :::tip Support a node to configure multiple mailing addresses, that is a single serial port multi-device connection. Please refer to the DL/T645-2007 industry standard data coding table for the specific data item name corresponding to the data identifier. * The data length is 1, and the data type is UINT8. * The data length is 2, and the data type is UINT16. * The data length is 3 or 4, and the data type is UINT32. * The data length is 5 or 6 or 7 or 8, and the data type is UINT64. * Set the value of **Decimal** according to the data format, e.g, if the data format is XXX.X, then **Decimal** is set to 0.1. ::: | DI3 | DI2 | DI1 | DI0 | Description | Type of data | Decimal value | Example | | -------------- | ----------------- | ---------------- | --------------- | -------------------------------- | ------- | --------- | ------------------------------------------------------------ | | 00 | 00~0A | 00 ~ 3F | 00 ~ 0C | DI3= 00, representing the electrical energy
DI0, representing the settlement date | UINT64 | 0.01 | 00-00-00-00 Representative (current) combined active total energy
00-00-00-01 Representative (last settlement date) combined active total energy | | 00 | 80~86
15~1E
94~9A
29~32
A8~AE
3D~46
BC~C2 | 00 | 00 ~ 0C | DI3= 00, representing the electrical energy
DI0, representing the settlement date | UINT64 | 0.01 | 00-80-00-00 Representative (current) total associated power
00-80-00-01 Representative (last 1 settlement date) associated total power
00-15-00-01 Representative (last 1 settlement date) A-phase positive Active energy
00-15-00-01 represents (last 2 settlement days) A-phase forward active energy
00-29-00-02 represents (last 2 settlement days) B-phase forward active energy | | 01 | 01 ~ 46 | 00 ~ FF | 01 ~ 0C | DI3= 01 | UINT64
STRING | 0.0001 | For example, 01-01-00-00 represents the current maximum active demand in the forward direction
01-01-00-00#T represents the occurrence time of the current maximum active demand in the forward direction | | 02 | 01~09 | 01 ~ 03 | 00 | DI3= 02, representing the variable | UINT16
UINT32 | 0.1
0.01
0.001
0.0001 | 02-01-01-00 Represents A-phase voltage
02-02-01-00 Represents A-phase current | | 02 | 0A~0B | 01 ~ 03 | 01 ~15 | DI2= 0A, representing the voltage harmonic content
DI2 = 0B, representing the current harmonic content
DI1, representing A, B, C phase
DI~0~, representing the th order of harmonic content | UINT16 | 0.01 | 02-0A-01-01 Represents the 1st harmonic content of A-phase voltage
02-0A-02-02 represents the 2nd harmonic content of B-phase voltage
02-0B-01-01 represents the 1st harmonic content of A-phase current
02-0B-02-02 represents the second harmonic content of phase B current | | 02 | 80 | 00 | 01 ~ 0A | DI3= 02, representing the variable | UINT16 | 0.01 | 02-80-00-01 Represents zero line current
02-80-00-02 Represents grid frequency | | 04 | 00 | 01 ~ 0E | 01 ~ 0C | DI3= 04, representing the parameter | UINT8
UINT16
UINT32
UINT64 | 0
0.1
0.001
0.0001 | 04-00-01-01 Represents date and time
04-00-01-03 represents maximum demand period
04-00-04-01 represents communication address
04-00-05-01 represents meter running status word 1 | | 05 | 00 03 | 00 | 01 03, 0C | DI3= 05, DI1= 00 | STRING | 0 | (Last 1) Timed Freeze Time | | 05 | 00 ~ 03 | 01 ~ 08 | 01 ~ 03, 0C | DI3= 05 | UINT32 | 0.01 | (Last 1) Timed Freeze Energy Data:
For example, 05-00-01-01 represents total active energy in the forward direction
05-00-01-01#1 represents active energy for rate 1 in the forward direction | | 05 | 00 ~ 03 | 09 ~ 0A | 01 ~ 03, 0C | DI3= 05 | UINT32
STRING | 0.0001 | (Last 1) Timed Freeze Maximum Demand and Occurrence Time:
For example, 05-00-09-01 represents the maximum active demand in the forward direction
05-00-09-01#T represents the occurrence time of the maximum active demand in the forward direction
05-00-09-01#01 represents the maximum demand for rate 1 in the forward direction
05-00-09-01#01#T represents the occurrence time of the maximum demand for rate 1 in the forward direction | | 05 | 00 03 | 10 | 01 03, 0C | DI3= 05, DI1= 10 | UINT32 | 0.0001 | (Last 1) Timed Freeze Variables:
For example, 05-00-10-01 represents total active power
05-00-10-01#1 represents phase A active power
05-00-10-01#2 represents phase B active power
05-00-10-01#3 represents phase C active power
05-00-10-01#4 represents total reactive power
05-00-10-01#5 represents phase A reactive power
05-00-10-01#6 represents phase B reactive power
05-00-10-01#7 represents phase C reactive power | | 06 | 00~06 | 00 | 00 ~ 02 | DI3= 06, representing the load record | UINT8
UINT64 | 0 | 06-00-00-00 Represents the oldest recorded block
06-06-00-00 represents the earliest recorded block of class 6 loads | ## Use Case You can continue to read how to use the EMQX Neuron DLT645-2007 driver to connect [Chint Single-phase Rail Meter](./example/connect.md) for a quick start.