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8. IMPLEMENTATION OF MODBUS-RTU PROTOCOL

ADA-1040PC3 protocol converter allows connecting Inverters with SunMaster-Soladin protocol as SLAVE to RS485 MODBUS-RTU

bus. The length of RS485 bus can be extended by the use of ADA-4040 repeaters or ADA-4044H HUBs RS485

The MODBUS-RTU protocol used for communication between ADA-1040PC3 converters and SCADA-type system or PLC controller

enable easy integration of SunMaster-Soladin inverters in existing automation systems BMS.

8.1. TABLE OF MODBUS-RTU ADDRESSES

8.1.1. REGISTERS ACTUAL VALUE MEASUREMENTS AND CONDITION INVERTER, READOUT 

BY FUNCTION 04 (3X – REFERENCES) INPUT REGISTERS

Address

3X

Registers

Address

Registers

description

Attribute

Value

30001

0

TypeIDH = 0x00

TypeIDL 8-bit inverter type

R

16-bit register

30002

1

Status1

Status0 16-bit inverter status

R

16-bit register

30003

2

UsolH

UsolL 16-bit 

solar panel voltage DC measurement

R

16-bit register

30004

3

IsolH

IsolL 16-bit solar panel 

current DC measurement

R

16-bit register

30005

4

FacH

FacL 16-bit network voltage AC frequency measurement 

R

16-bit register

30006

5

UacH

UacL 16-bit network voltage AC measurement

R

16-bit register

30007

6

IacH

IacL 16-bit network current AC measurement

R

16-bit register

30008

7

PacH

PacL 16-bit network power AC measurement

R

16-bit register

30009

8

Hi = 0x00

EacH (Low)

R

16-bit register

30010

9

EacM

EacL 24-bit energy counter - kWh

R

16-bit register

30011

10

TempH=0x00

TempL 8-bit internal temperature

R

16-bit register

30012

11

Hi=0x00

TonH (Lo)

R

16-bit register

30013

12

TonM

TonL 24-bit operating hour counter

R

16-bit register

30014

13

Trecl/UocH 

 

Status1, bit4=1 : 

Trecl/UocL 

 

Status1, bit4=0 : 

16-bit time from reclosing / 16-bit open terminal voltage

R

16-bit register

30015

14

Hi = 0x00

Rac/Phase network impedance measurement

R

16-bit register

13

ADA-1040PC3

Summary of Contents for ADA-1040PC3

Page 1: ...User manual ADA 1040PC3 SunMaster to MODBUS RTU converter 1 io_ada 1040pc3_v1 06_en Copyright 2001 2017 CEL MAR sp j ADA 1040PC3...

Page 2: ...8 1 2 REGISTERS ACTUAL VALUES MEASUREMENTS AND CONDITION INVERTER READOUT BY FUNCTION 03 4X REFERENCES HOLDING REGISTERS 14 8 2 FRAME STRUCTURE OF MODBUS RTU PROTOCOL 14 8 3 USED FUNCTIONS OF MODBUS R...

Page 3: ...to short circuit and damage the device The device can not be used for applications that determine human life and health eg Medical 1 3 CE LABEL The CE symbol on the device CEL MAR means compatibility...

Page 4: ...and support the asynchronous transmission data with baud rate 230 4 kbps ADA 1040PC3 has DB 9F connector for connecting PC Link RS232 interface to Soladin and screw terminal block for connection of RS...

Page 5: ...ables in the distance not shorter than 25 cm from powering cables apply cable of adequate cross section due to voltage drops for converter powering use suppression filters for powering converters that...

Page 6: ...x PC or RS232 device 5 2 3 GND Tx A Tx B Rx Rx ADA 1040PC3 Tx 2 Rx 3 GND 5 5 2 3 DB 9F socket RS485 422 connector DB 9F RS232 connector DB 9M plug RS cable DB 9M RS232 connector USB DB 9M RS232 connec...

Page 7: ...ON OF INVERTER WITH SOLADIN INTERFACE TO RS485 4W MODBUS RTU BUS Fig 7 Example connection of SOLADIN inverter by the use of ADA 1040PC3 to RS485 4W 4 wire bus 7 ADA 1040PC3 RS485 RS422 connector RS485...

Page 8: ...0 W 5 0 25W are delivered with the converters 3 6 POWER SUPPLY CONNECTION To connect power supply to the converter should have DC power supplies regulated output voltage from 10 V to 30V min nominal p...

Page 9: ...DA 1040PC3 converter can be made by the use of ADAConfig Software selling with converter To make the configuration connect converter to computer and power supply If after power on the front panel is n...

Page 10: ...ode as in the table below SW1 1 SW1 2 OFF ON Disconnect the power and after while connect again the power After that will be loaded the factory default setting to the converter internal registers Afte...

Page 11: ...t continuously and the converter will be in Emergency Firmware Update mode Now follow the description in the above point After successful software update set microswitch SW1 to the run mode as shown i...

Page 12: ...ace should connect to RS485 RS422 port RS485 MODBUS RTU bus Frames of MODBUS protocol having the errors CRC are rejected by the converter Frames of SunMaster Soladin having the errors CRC are also rej...

Page 13: ...atus R 16 bit register 30003 2 UsolH UsolL 16 bit solar panel voltage DC measurement R 16 bit register 30004 3 IsolH IsolL 16 bit solar panel current DC measurement R 16 bit register 30005 4 FacH FacL...

Page 14: ...16 bit network power measurement AC R 16 bit register 40009 8 Hi 0x00 EacH Low R 16 bit register 40010 9 EacM EacL 24 bit energy counter kWh R 16 bit register 40011 10 TempH 0x00 TempL 8 bit inverter...

Page 15: ...n h 60 Time from reclosing Trec s 1 Network impedance measurement Rac W 100 Algorithm 1 Readout register is saved to regular type variable float and then divide it by the factor DW Fragment of code in...

Page 16: ...ion 0x03 0x04 are used for readout of status and measurement values from the INVERTER The measurement values readout form MODBUS RTU register is presented by two 16 bit registers The registers with th...

Page 17: ...work energy meter Eac from registry address 40009 address 30009 11 03 04 00 00 0B 90 CRCLo CRCHi 11 04 04 00 00 0B 90 CRCLo CRCHi In respond the value of AC network energy meter Eac is presented as 4...

Page 18: ...NCY VALUE Fac ALTERNATING VOLTAGE NETWORK CONNECTED TO INVERTER 4X 3X REFERENCES The measurement value of frequency alternating voltage network to inverter readout from 16 bit register Fac MODBUS RTU...

Page 19: ...in C C type short int Query of inverter power network Pac from registry address 40008 address 30008 11 03 00 07 00 01 CRCLo CRCHi 11 04 00 07 00 01 CRCLo CRCHi Readout of inverter power network Pac f...

Page 20: ...nverter s running time Ton from registry address 40012 address 30012 11 03 00 08 0B 02 CRCLo CRCHi 11 04 00 08 0B 02 CRCLo CRCHi Readout of inverter s running time Ton from registry address 40012 addr...

Page 21: ...O 1 YES 6 Network frequency Fac Low 0 NO 1 YES 7 Inverter on 0 NO 1 YES 7 Inverter temperature High 0 NO 1 YES 9 RS232 INTERFACE PIN DESCRIPTION OF DSUB 9F DCE SOCKET Pin Signal Description ADA 1040PC...

Page 22: ...yellow LED data transmission through RS485 RS422 interface Electrical Parameters Power requirements 10 24 30 V DC Power Cable Recommended length of power cable up to 3m Power 2W Protection from rever...

Page 23: ...23 ADA 1040PC3...

Page 24: ...munications products in the world such as data transmission converters with interface RS232 RS485 RS422 USB Current Loop Fibre Optic Converters and Ethernet or Wi Fi Please contact us to tell how you...

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