SMA SOLID-Q 50 Manual

SMASOLID-Q-Modbus-TI-en-10 | Version 1.0ENGLISH
Technical Information
SMA SOLID-Q 50 / PRO 60 Modbus®Interface

SMA New Energy Technology (Jiangsu) Co., Ltd.
2 SMASOLID-Q-Modbus-TI-en-10 | Version 1.0 Technical Information
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3 SMASOLID-Q-Modbus-TI-en-10 | Version 1.0 Technical Information
Table of Contents
1Information on this Document ..............................................................4
2Safety......................................................................................................4
2.1 Intended Use .........................................................................................................4
2.2 Skills of Qualified Persons ....................................................................................4
3SMA-China Modbus Profile...................................................................4
3.1Information on the Assignment Tables .................................................................4
3.2 SMA-China Data Types and NaN Values ..........................................................5
3.3 SMA-China Modbus Profile - Register Overview ................................................5
3.4 Warning and Error Codes....................................................................................9
3.5 Grid Codes......................................................................................................... 11
3.6 Dynamic Reactive Power Management............................................................ 12
3.6.1 CosPhi(P) curve ................................................................................................ 12
3.6.2 Q(U) curve ....................................................................................................... 12
3.7 LVRT curve settings ............................................................................................. 13
3.8 Frame format ...................................................................................................... 13
3.8.1 Read Holding Register (Function Code: 0x03) ............................................... 14
3.8.2 Read Input Register (Function Code: 0x04).................................................... 15
3.8.3 Write Holding Single Register (Function Code: 0x06) ................................... 16
3.8.4 Write Holding Multiple Registers (Function Code: 0x10)............................... 17
3.8.5 Write Holding Multiple Registers (Function Code: 0x10) for broadcast........ 18
3.8.6 Exception Codes .............................................................................................. 18
4Contact................................................................................................. 18

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4 SMASOLID-Q-Modbus-TI-en-10 | Version 1.0 Technical Information
1Information on this Document
Validity
This document is valid for SMA SOLID-Q 50 & SOLID-Q PRO 60 inverters in China.
Target Group
This document is intended for qualified persons. Only persons with appropriate skills are allowed to
perform the tasks described in this document.
2Safety
2.1 Intended Use
The Modbus interface of the supported SOLID-Q is designed for industrial use, via RS485 or
RS422 protocol to enable remote control of the PV system, remote querying of values, and remote
parameter setting.
2.2 Skills of Qualified Persons
The activities described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
•Detailed knowledge of the grid management services
•Knowledge of IP-based network protocols
•Training in the installation and configuration of IT systems
•Knowledge of the Modbus specifications
•Knowledge of and compliance with this document and all safety information
3SMA-China Modbus Profile
3.1 Information on the Assignment Tables
The assignment tables of the SMA-China Modbus profile present the following information:
Information
Explanation
ADR (DEC)
Decimal Modbus address.
Description/
number code(s)
Short description of the Modbus register and the number codes used.
Type
Type of the data (see Section 3.2).

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Unit
Unit of the data.
Gain
Real value = Gain * output value
Access
RO: Read Only
RW: Read and Write
3.2 SMA-China Data Types and NaN Values
The following table shows the data types used in the SMA-China Modbus profile and the possible
NaN values. The SMA-China data types are listed in the assignment tables in the Type column.
They describe the data widths of the assigned values:
Type
Description
NaN value
S16
A signed word (16-bit).
0x8000
U16
A unsigned word (16-bit).
0xFFFF
U32
A unsigned double word (32-bit).
0xFFFF FFFF
ASCII
Use 8 bit to indicate all the munber 0~9, the letter,and some
special symbol (for example &,@,and so on)
0~9,a~z,
A~Z, blank
3.3 SMA-China Modbus Profile - Register Overview
In the following table you will find all the measured values and parameters of the SMA-China
Modbus Profile.
Read-Only Registers
ADR (DEC)
Description/number code
Type Unit Gain Access
30001
Device Type: 1=Single phase / 3=Three pahse U16 -
-
RO
30002
E-Today
U32
kwh
0.1
RO
30004
E-Total
U32
kwh
0.1
RO
30006
H-total
U32
h
1
RO
30012
Device State: 0 = wait / 1 = normal / 2 = faulty
U16
-
-
RO
30013
Error Code
U16
-
-
RO
30014
Connect Time
U16
s
1
RO

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30015
Temperature
S16
°C
0.1
RO
30016
Connection Mode of PV Strings
0 = None
1 = PV1 Connected
2 = PV2 Connected
3 = PV1/PV2 Independently Connected
4 = All Input Parallel Connected
5 = PV1/PV3 Independently Connected
6 = PV2/PV3 Independently Connected
7 = PV1/PV2/PV3 Independently Connected
8 = PV3 Connected
U16 - - RO
30017
Bus Voltage
U16
V
0.1
RO
30018
PV1 Voltage
U16
V
0.1
RO
30019
PV1 Current
U16
A
0.1
RO
30020
PV2 Voltage
U16
V
0.1
RO
30021
PV2 Current
U16
A
0.1
RO
30022
PV3 Voltage
U16
V
0.1
RO
30023
PV3 Current
U16
A
0.1
RO
30029
L1 Phase Voltage [SOLID-Q 50]
L1 - L2 Line Voltage [SOLID-Q PRO 60]
U16 V 0.1 RO
30030
L1 Phase Current
U16
A
0.1
RO
30031
L2 Phase Voltage [SOLID-Q 50]
L2 - L3 Phase Voltage [SOLID-Q PRO 60]
U16 V 0.1 RO
30032
L2 Phase Current
U16
A
0.1
RO
30033
L3 Phase Voltage [SOLID-Q 50]
L3 - L1Phase Voltage [SOLID-Q PRO 60]
U16 V 0.1 RO
30034
L3 Phase Current
U16
A
0.1
RO
30035
Grid Frequency
U16
Hz
0.01
RO
30038
Pac
U32
W
1
RO
30040
Qac
U32
Var
1
RO
30042
Power Factor
S16
-
-
RO
30043
Reactive Power Mode
0 = None
1 = Fixed Power Factor
2 = Cos Phi(P) curve
U16 - - RO

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4 = Fixed Q value
5 = Q(U) curve
30044
Active Power Mode
0 = None
1 = Fixed Active Power
U16 - - RO
30047
Version of Protocol
U16
-
-
RO
30048
String 1 Current
U16
A
0.1
RO
30049
String 2 Current
U16
A
0.1
RO
30050
String 3 Current
U16
A
0.1
RO
30051
String 4 Current
U16
A
0.1
RO
30052
String 5 Current
U16
A
0.1
RO
30053
String 6 Current
U16
A
0.1
RO
30054
String 7 Current
U16
A
0.1
RO
30055
String 8 Current
U16
A
0.1
RO
30056
String 9 Current
U16
A
0.1
RO
30057
String 10 Current
U16
A
0.1
RO
30058
String 11 Current
U16
A
0.1
RO
30059
String 12 Current
U16
A
0.1
RO
Read and Write Registers
ADR (DEC)
Description/number code
Type Unit Gain Access
40013
0=Power Off / 1=Power On
U16
-
-
RW
42021
…
42028
Serial Number (16 digits: 2 ASCII per ADR ..1 to ..8) ASCII - - RW
45001
Grid Code (see Section 4.4)
U16
-
-
RW
45007
Grid Voltage High Limit2
U16
V
0.1
RW
45008
Grid Voltage High Limit Time2
U16
ms
20
RW
45009
Grid Voltage High Limit1
U16
V
0.1
RW
45010
Grid Voltage High Limit Time1
U16
ms
20
RW
45011
Grid Voltage Low Limit2
U16
V
0.1
RW
45012
Grid Voltage Low Limit Time2
U16
ms
20
RW

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45013
Grid Voltage Low Limit1
U16
V
0.1
RW
45014
Grid Voltage Low Limit Time1
U16
ms
20
RW
45015
Grid Voltage High Recovery Value
U16
V
0.1
RW
45016
Grid Voltage Low Recovery Value
U16
V
0.1
RW
45017
Grid Frequency High Limit2
U16
Hz
0.01
RW
45018
Grid Frequency High Limit Time2
U16
ms
20
RW
45019
Grid Frequency High Limit1
U16
Hz
0.01
RW
45020
Grid Frequency High Limit Time1
U16
ms
20
RW
45021
Grid Frequency Low Limit2
U16
Hz
0.01
RW
45022
Grid Frequency Low Limit Time2
U16
ms
20
RW
45023
Grid Frequency Low Limit1
U16
Hz
0.01
RW
45024
Grid Frequency Low Limit Time1
U16
ms
20
RW
45025
Grid Frequency High Recovery Value
U16
Hz
0.01
RW
45026
Grid Frequency Low Recovery Value
U16
Hz
0.01
RW
45027
10 Minutes Average Overvoltage Threshold
U16
V
0.1
RW
45028
ISO Fault Threshold
U16
kOhm
1
RW
45029
DCI Fault Threshold
U16
mA
1
RW
45030
Active Power Set
U16
%
-
RW
45031
Active Power Control Response Time
U16
s
1
RW
45037
Reactive Power Control Mode
0 = None
1 = Fixed Power Factor [ADR 45038]
2 = Cos Phi(P) curve [ADR 45039 .. 45042]
4 = Fixed Q value [ADR 45043]
5 = Q(U) curve [ADR 45044 .. 45047]
U16 - - RW
45038
Power Factor: - = Lagging / + = Leading
U16
-
0.01
RW
45039
Cos Phi(P) Curve: First Point of Active Power
U16
%
-
RW
45040
Cos Phi(P) Curve: First Point of Cos Phi
- = Lagging / + = Leading
U16 - 0.01
RW
45041
CosPhi(P) Curve: Second Point of Active Power
U16
%
-
RW
45042
CosPhi(P) Curve: Second Point of CosPhi
U16
-
0.01
RW

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- = Lagging / + = Leading
45043
Q Command Mode Set Value
- = Lagging / + = Leading U16 % - RW
45044
Q(U) Curve First Point of U
U16
%
-
RW
45045
Q(U) Curve First Point of Q
- = Lagging / + = Leading
U16 % - RW
45046
Q(U) Curve Second Point of U
U16
%
-
RW
45047
Q(U) Curve Second Point of Q
- = Lagging / + = Leading
U16 % - RW
45052
Q(U) Curve Response Time
U16
s
1
RW
45053
LVRT Support Current Factor (K-factor)
U16
-
-
RW
45054
LVRT U-T Curve: U1 (see Section 3.7)
U16
%
-
RW
45055
LVRT U-T Curve: T1 (see Section 3.7)
U16
ms
20
RW
45056
LVRT U-T Curve: U2 (see Section 3.7)
U16
%
-
RW
45057
LVRT U-T Curve: T2 (see Section 3.7)
U16
ms
20
RW
45058
LVRT U-T Curve: U3 (see Section 3.7)
U16
%
-
RW
45059
LVRT U-T Curve: T3 (see Section 3.7)
U16
ms
20
RW
3.4 Warning and Error Codes
Warning code Description
0
No warning
30
Recovered from warning
151
SPD warning
156
Internal fan abnormal
157
External fan 1 abnormal
158
External fan 2 abnormal
161
Fuse abnormal

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163
PV string current abnormal
166
CPU selftest warning – register abnormal
167
CPU selftest warning – RAM abnormal
168
CPU selftest warning – ROM abnormal
Error code Description
1
Internal communication failure
2
EEPROM R/W failure
3
Relay check failure
4
DC injection too high
8
AC HCT failure
9
Residual Current Device failure
11
Internal software mismatch
33
f,ac out of range
34
V,ac out of range
35
Utility loss
36
Residual current too high
37
V,pv overvoltage
38
Isolation fault
40
Overtemperature
41
Consistent Fault: Vac different
42
Consistent Fault: Fac different
43
Consistent Fault: Residual current different
44
Consistent Fault: DC injection different
46
Too high DC bus voltage

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48
Average volt of ten minutes out of range
3.5 Grid Codes
Grid Code Description
0x23
China CN NB/T 32004*
0x37
China CN NB/T 32004**
0x38
China CN GB/T 19964**
Note:
*applicable for SOLID-Q 50
** applicable for SOLID-Q PRO 60

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3.6 Dynamic Reactive Power Management
3.6.1 CosPhi(P) curve
To activate CosPhi(P) curve, please use ADR 45037 and then use ADR 45039 .. 45042 to set the
curve points as highlighted in below graphic. Points I and II can be set in both quadrants. The
range of CosPhi is -0.80 .. 0.80.
3.6.2 Q(U) curve
To activate Q(U) curve, please use ADR 45037 and then use ADR 45044 .. 45047 to set the
curve points as highlighted in below graphic. Point I be set in upper-left (II) and lower-left (III) quad-
rants, Point II can be set in upper-right (I) and lower-right (IV.) quadrant. Qmax is limited by the
CosPhi range of -0.80 .. 0.80.

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3.7 LVRT curve settings
To adjust the LVRT curve, please use points T1-3 and U1-3 [ADR 45054...45059] as depicted
below.
3.8 Frame format
MODBUS function codes:
•Read Holding Register (0x03)
•Read Input Register (0x04)
•Write Holding Single Register (0x06)
•Write Holding Multiple Registers (0x10)
•Write Holding Multiple Registers (0x10) for broadcast
Remark: when reading or writing registers, the actual address is „address in table – 1“

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3.8.1 Read Holding Register (Function Code: 0x03)
Request:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Register length
2 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Response:
Device ID
1 Byte
Function code
1 Byte
Byte count
1 Byte
Data
N × 1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Error：
Device ID
1 Byte
Function code + 0x80
1 Byte
Exception code
1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte

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3.8.2 Read Input Register (Function Code: 0x04)
Request:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Register length
2 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Response:
Device ID
1 Byte
Function code
1 Byte
Byte count
1 Byte
Data
N × 1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Error：
Device ID
1 Byte
Function code + 0x80
1 Byte
Exception code
1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte

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3.8.3 Write Holding Single Register (Function Code: 0x06)
Request:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Data
2 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Response:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Data
2 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Error:
Device ID
1 Byte
Function code + 0x80
1 Byte
Exception code
1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte

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3.8.4 Write Holding Multiple Registers (Function Code: 0x10)
Request:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Register length
2 Byte
Data length
1 Byte
Data
N × 1Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Response:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Register length
2 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Error:
Device ID
1 Byte
Function code + 0x80
1 Byte
Exception code
1 Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte

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3.8.5 Write Holding Multiple Registers (Function Code: 0x10) for
broadcast
Request:
Device ID
1 Byte
Function code
1 Byte
Register Address(Hi)
1 Byte
Register Address(Lo)
1 Byte
Register length
2 Byte
Data length
1 Byte
Data
N × 1Byte
CRC(Lo)
1 Byte
CRC(Hi)
1 Byte
Response: none
3.8.6 Exception Codes
0x01 Illegal function
0x02 Illegal address
0x03 Illegal data
0x04 Slave device failure
4Contact
If you experience any technical problems with our products, please contact the
SMA Service Hotline to provide you with the necessary assistance:
SMA New Energy Technology (Jiangsu) Co., Ltd.
No 198, Xiangyang Road
215011 Suzhou (China)
SMA Service Hotline: [phone]