ModBus RTU Infrared Electric Meter Reading Device

 

1 Product Overview

 

 

 

 

 

 

 

 

 

The DAQ-GP-IRMODBUSRTU infrared meter reading terminal, developed by Shanghai Data Acquisition IoT Technology Co., Ltd., is a device that converts State Grid electric meters such as DLT645/698 into the ModBus communication protocol. It can collect electrical energy data, voltage, current, power factor, and other electrical parameters from State Grid meters.

Overview of Infrared Meter Reading Principle: The infrared photoelectric probe periodically reads parameter information from the smart meter via the infrared optical port and uploads the data. The infrared meter reader features infrared signal modulation and demodulation functions, modulating binary digital signals into a 38 kHz frequency pulse sequence and driving the infrared emitting diode to transmit these as infrared light pulses. The transceiver converts received optical pulses into electrical signals, which are then amplified and filtered before being sent to the demodulation circuit for demodulation. The signals are restored to binary digital form, parsed into data packets, and converted into the ModBus protocol, enabling reading by other host computer software.

This terminal supports meter reading scenarios for various instruments equipped with infrared communication interfaces, such as electric meters and gas meters. It is suitable for electric energy meter data acquisition, smart city data acquisition, power monitoring data acquisition, energy-saving and emission reduction data monitoring system acquisition, energy consumption monitoring system data acquisition, photovoltaic system data acquisition, intelligent monitoring data acquisition, robot data acquisition, smart security system data acquisition, and cloud platform system data acquisition. Electric Energy Meter Verification and Testing Platform; particularly suitable for photovoltaic power generation system meter reading and State Grid electric meter main meter reading under fully sealed lead seal conditions, where no seals may be opened.

2 Service Philosophy

Our company solemnly guarantees:

You are purchasing not only a product but also meticulous and comprehensive technical support services !!! ( =^_^= )  

This product can be installed on-site by ordinary workers with only electrical connection required; no debugging is necessary!

We provide free remote guidance and remote configuration debugging services, transmitting data to the user-designated cloud platform.

Free consultation services for IoT solutions are available!

3 Applicable Standards

《 Q/GDW1365—2013 Technical Specification for Security Certification of Smart Electric Energy Meter Information Exchange 》 State Grid Standard

Multifunctional Electric Energy Meter Communication Protocol DLT645-2007 State Grid Standard

Three-Phase Smart Electric Energy Meter Type Specification Q/GDW1356-2013 State Grid Standard

4 Product Features and Specifications

4.1  Acquisition Characteristics

l Infrared Carrier Frequency: 38 kHz

l Communication Baud Rate: 1200–115200 bps, adaptive according to electric meter communication parameters

l Infrared Communication Distance: ≤10 meters

l Communication Angle: ≤15 degrees

Infrared Communication Protocol: Compliant with IEC 62056-21 (IEC 1107) and DL/T-645-1997 and 2007 standards; supports Modbus protocol.

4.2  Electrical Characteristics

l Power Supply Mode: 5–24 V DC power supply

l Operating Power Consumption: less than 5 W

4.3  Operating Environment

l Temperature: -30°C to 75°C, Humidity: 0 to 95%

5 Communication Protocol

5.1  Module Configuration Description

MODBUS Commands: 0x03: Read Data Command, 0x06: Single Register Write Command, 0x10: Batch Write Command.

Configuration Parameters
Serial Number	Register Name	Register Address	Command	Remarks
1	Address	0xF000	0x03/0x06	Default is 1; 255 is the broadcast address
2	645 Address	0xF001	0x03/0x06	645 Address 1234
3	645 Address	0xF002	0x03/0x06	645 Address 5678
4	645 Address	0xF002	0x03/0x06	645 Address 9ABC
5	Electric Meter Communication Protocol	0xF004	0x03/0x06	0: 645-07 Protocol; 1: 645-97 Protocol
6	Module Communication Mode	0xF005	0x03/0x06	0: MODBUS Mode; 1: Transparent Transmission Mode
7	Module Acquisition Mode	0xF006	0x03/0x06	0: Cyclic meter reading; 1: Real-time meter reading by single command
8	Module acquisition interval	0xF007	0x03/0x06	Cyclic meter reading; cyclic meter reading interval: 1S–60000S
9	4851 port (MODBUS) communication baud rate	0xF008	0x03/0x06	0:1200,1:2400,2:4800,3:9600,4:14400,5:19200,6:38400,7:56000,8:57600,9:115200
10	4851 port (MODBUS) parity mode	0xF009	0x03/0x06	0: No parity; 1: Even parity; 3: Odd parity
11	4852 port (DLT645) communication baud rate	0xF00A	0x03/0x06	0:1200,1:2400,2:4800,3:9600,4:14400,5:19200,6:38400,7:56000,8:57600,9:115200
12	4852 port (DLT645) parity mode	0xF00B	0x03/0x06	0: No parity; 1: Even parity; 3: Odd parity

 

5.2  Modbus default read point table

order number	Register name	Register address	order	remarks
1	Combine positive active power and total energy	1000	0x03	Floating point type, high address first
2	Combine positive active peak power	1002	0x03	Floating point type, high address first
3	Combine positive active peak power	1004	0x03	Floating point type, high address first
4	Combine positive active power with flat energy	1006	0x03	Floating point type, high address first
5	Combine positive active valley power	1008	0x03	Floating point type, high address first
6	The current is positive active total energy	1010	0x03	Floating point type, high address first
7	At present, active peak power is being supplied	1012	0x03	Floating point type, high address first
8	At present, active peak power is being generated	1014	0x03	Floating point type, high address first
9	At present, active power is being supplied	1016	0x03	Floating point type, high address first
10	At present, active power is flowing in the valley	1018	0x03	Floating point type, high address first
11	Current reverse active total power	1020	0x03	Floating point type, high address first
12	The current reverse active rate is 1 kilowatt hour	1022	0x03	Floating-point type, high address first
13	The current reverse active rate is 2 kilowatt-hours	1024	0x03	Floating point type, high address first
14	The current reverse active rate is 3 kilowatt-hours	1026	0x03	Floating point type, high address first
15	The current reverse active rate is 4 kilowatt-hours	1028	0x03	Floating point type, high address first
16	Combine reactive power to get total energy	1030	0x03	Floating point type, high address first
17	Combine reactive power with 1 sharp electric energy	1032	0x03	Floating point type, high address first
18	Combine reactive power with peak energy	1034	0x03	Floating point type, high address first
19	The combined reactive power is equal to the electric energy	1036	0x03	Floating point type, high address first
20	Combine reactive power with 1 valley power	1038	0x03	Floating point type, high address first
21	Combine reactive power 2 total electric energy	1040	0x03	Floating point type, high address first
22	Combine reactive power with 2 sharp electric energy	1042	0x03	Floating point type, high address first
23	Combine reactive power with peak power	1044	0x03	Floating point type, high address first
24	The combined reactive power is 2 flat electric energy	1046	0x03	Floating point type, high address first
25	Combine reactive power with valley power	1048	0x03	Floating point type, high address first
26	The total active energy of the portfolio on the last settlement day	1050	0x03	Floating point type, high address first
27	The portfolio had peak power on the last settlement day	1052	0x03	Floating point type, high address first
28	The portfolio has peak power on the last settlement day	1054	0x03	Floating point type, high address first
29	The portfolio had positive and flat power on the last settlement day	1056	0x03	Floating point type, high address first
30	The portfolio had active valley power on the last settlement day	1058	0x03	Floating point type, high address first
31	The total active power is positive on the last settlement day	1060	0x03	Floating point type, high address first
32	Positive active peak power was recorded on the last settlement day	1062	0x03	Floating point type, high address first
33	The last settlement day is positive active peak power	1064	0x03	Floating point type, high address first
34	The last settlement day is positive active flat power	1066	0x03	Floating point type, high address first
35	The previous settlement day has positive active valley power	1068	0x03	Floating point type, high address first
36	The total reactive power of the previous settlement day	1070	0x03	Floating point type, high address first
37	The reverse active rate for the last settlement day is 1 kilowatt hour	1072	0x03	Floating point type, high address first
38	The reverse active rate for the last settlement day is 2 kilowatt-hours of electricity	1074	0x03	Floating point type, high address first
39	The reverse active rate for the last settlement day is 3 kilowatt-hours	1076	0x03	Floating point type, high address first
40	The reverse active rate for the last settlement day is 4 kilowatt-hours	1078	0x03	Floating point type, high address first
41	The total energy of the reactive power in the portfolio on the last settlement day is 1	1080	0x03	Floating point type, high address first
42	The previous settlement day combination of reactive power 1 spike energy	1082	0x03	Floating point type, high address first
43	The combined reactive power of the last settlement day is 1 peak power	1084	0x03	Floating point type, high address first
44	The previous settlement day combination of reactive power is 1 flat electricity	1086	0x03	Floating point type, high address first
45	The combined reactive power of the last settlement day is 1 valley power	1088	0x03	Floating point type, high address first
46	The total energy of the reactive power of the portfolio on the last settlement day	1090	0x03	Floating point type, high address first
47	The previous settlement day combination of reactive power 2 spike energy	1092	0x03	Floating point type, high address first
48	The combined reactive power of the last settlement day is 2 peak power	1094	0x03	Floating point type, high address first
49	The previous settlement day combination of reactive power is 2 flat electricity	1096	0x03	Floating point type, high address first
50	The combined reactive power of the last settlement day is 2 valley power	1098	0x03	Floating point type, high address first
51	A phase voltage	1100	0x03	Floating point type, high address first
52	B phase voltage	1102	0x03	Floating point type, high address first
53	C phase voltage	1104	0x03	Floating point type, high address first
54	A phase current	1106	0x03	Floating point type, high address first
55	B phase current	1108	0x03	Floating point type, high address first
56	C phase current	1110	0x03	Floating point type, high address first
57	Instantaneous active power always exists	1112	0x03	Floating point type, high address first
58	Instantaneous A phase active power	1114	0x03	Floating point type, high address first
59	Instantaneous B phase active power	1116	0x03	Floating point type, high address first
60	Instantaneous C phase active power	1118	0x03	Floating point type, high address first
61	Instantaneous total reactive power	1120	0x03	Floating point type, high address first
62	Instantaneous A phase reactive power	1122	0x03	Floating point type, high address first
63	Instantaneous B phase reactive power	1124	0x03	Floating point type, high address first
64	Instantaneous C phase reactive power	1126	0x03	Floating point type, high address first
65	Instantaneous total apparent power	1128	0x03	Floating point type, high address first
66	Instantaneous A phase apparent power	1130	0x03	Floating point type, high address first
67	Instantaneous B phase apparent power	1132	0x03	Floating point type, high address first
68	Instantaneous C phase apparent power	1134	0x03	Floating point type, high address first
69	Instantaneous total power factor	1136	0x03	Floating point type, high address first
70	Instantaneous A phase power factor	1138	0x03	Floating point type, high address first
71	Instantaneous B phase power factor	1140	0x03	Floating point type, high address first
72	Instantaneous C phase power factor	1142	0x03	Floating point type, high address first
73	Grid frequency	1144	0x03	Floating point type, high address first