16
Technical Data MN019001EN
Effective November 2015
Bussmann series
PV Combiner box
EATON www.eaton.com
16 string monitoring units
Interface parameters
The type S1 string monitoring module PVCBM-GR16 supports the
modbus RTU protocol with the following interface parameters:
Baud rate 1200 to 38400 Bd
Format 8n1, 8e1 or 8o1
Max. cable length 1.2km
Unit load 1/8
Byte order MSBit-LSBit
Word order LSByte-MSByte
Address range 1 – 247
Max. frame length 256 Bytes
The following are supported as function codes:
03 Read contents of a holding register
04 Read contents of an input register
06 Write contents of a R/W register (preset single register)
Address basis Function code
for reading
Function code
for writing
Input register
30001 0x04 -
Holding register
40001 0x03 0x06
List of registers and functions
Abbreviations used Explanation
UINT16 Data type unsigned integer. 16 bit
UINT32 Data type unsigned integer. 32 bit
Float32 Data type floating, 32 bit
R Only read access possible (read only)
R/W Read and write access possible (read/write)
Register
(integer)
Data
type
Channel (descrip-
tion)
Possible values Unit R/W
0000 UINT16
Digital input 01 (main
switch)
0: OFF
1: ON
R
0001 UINT16
Digital input 02 (1000V
DC overvoltage pro-
tection
0: NOK
1: OK
R
0003 UINT16 Digital input 03 0, 1 R
0004, 0005 Float32 Current I
1
-30.00 … +30.00 A R
0006, 0007 Float32 Current I
2
-30.00 … +30.00 A R
0008, 0009 Float32 Current I
3
-30.00 … +30.00 A R
0010, 0011 Float32 Current I
4
-30.00 … +30.00 A R
0012, 0013 Float32 Current I
5
-30.00 … +30.00 A R
0014, 0015 Float32 Current I
6
-30.00 … +30.00 A R
0016, 0017 Float32 Current I
7
-30.00 … +30.00 A R
0018, 0019 Float32 Current I
8
-30.00 … +30.00 A R
0020, 0021 Float 32 Current I
9
-30.00 … +30.00 A R
0022, 0023 Float32 Current I
10
-30.00 … +30.00 A R
0024, 0025 Float32 Current I
11
-30.00 … +30.00 A R
0026, 0027 Float32 Current I
12
-30.00 … +30.00 A R
0028, 0029 Float32 Current I
13
-30.00 … +30.00 A R
0030, 0031 Float32 Current I
14
-30.00 … +30.00 A R
0032, 0033 Float32 Current I
15
-30.00 … +30.00 A R
0034, 0035 Float32 Current I
16
-30.00 … +30.00 A R
0036, 0037 Float32 Summed current -480.00 … +480.00 A R
0038, 0039 Float32 Voltage 0 … 1000.0 V R
0040, 0041 Float32 Power 0 … 480.000 W R
0042, 0043 Float32 Temperature 1 -40.0 … +160.0 °C R
0044, 0045 Float32 Temperature 2 -40.0 … +160.0 °C R
0050, 0051 UINT32 Firmware date
0xDDMMYYYY
Example:
0x040507DB
04.05.2011
R
Register
(integer)
Data
type
Channel (descrip-
tion)
Possible values Unit R/W
0052, 0053 UINT32 Software version
0xBBBBMMNN
Example:
0x12510102
V1.02.1251
R
0054 UINT16 Error code
1: OK
≠1: NOK
R
0055 UINT16 Calibration status
1: OK
2: Busy
>2: Error number
R
0059 UINT16 Sync ID
1)
User code of Reg.
0302
R
0060, 0061 Float32 Sync_current I
1
1)
-30.00 … +30.00 A R
0062, 0063 Float32 Sync_current I
2
-30.00 … +30.00 A R
0064, 0065 Float32 Sync_current I
3
-30.00 … +30.00 A R
0066, 0067 Float32 Sync_current I
4
-30.00 … +30.00 A R
0068, 0069 Float32 Sync_current I
5
-30.00 … +30.00 A R
0070, 0071 Float32 Sync_current I
6
-30.00 … +30.00 A R
0072, 0073 Float32 Sync_current I
7
-30.00 … +30.00 A R
0074, 0075 Float32 Sync_current I
8
-30.00 … +30.00 A R
0076, 0077 Float32 Sync_current I
9
-30.00 … +30.00 A R
0078, 0079 Float32 Sync_current I
10
-30.00 … +30.00 A R
0080, 0081 Float32 Sync_current I
11
-30.00 … +30.00 A R
0082, 0083 Float32 Sync_current I
12
-30.00 … +30.00 A R
0084, 0085 Float32 Sync_current I
13
-30.00 … +30.00 A R
0086, 0087 Float32 Sync_current I
14
-30.00 … +30.00 A R
0088, 0089 Float32 Sync_current I
15
-30.00 … +30.00 A R
0090, 0091 Float32 Sync_current I
16
-30.00 … +30.00 A R
0092, 0093 Float32 Sync_summed_current -480 … +480 A R
0094, 0095 Float32 Sync_voltage 0 … 1000.0 V R
0096, 0097 Float32 Sync_power 0 … 480.000 W R
0098, 0099 Float32 Sync_temperature 1 -40.0 … +160.0 °C R
0100, 0101 Float32 Sync_temperature 2 -40.0 … +160.0 °C R
0200 UINT16 Device identification e.g. 2006 R
0202 UINT16 Serial number low e.g. 14148 R
0203 UINT16 Serial number high e.g. 4 R
0205 UINT16 Modbus address 1 … 254 R/W
0208 UINT16 Response delay in ms
3)
0 … 250 R/W
0209 UINT16 Baud rate and parity
For values refer to
table on Page…
R/W
0300 UINT16 EcoMode
4)
0: OFF (Factory
setting)
1: ON
R/W
0302 UINT16 Sync register
1)
User code
Write: Trigger sync
R/W
Setting Specified value (decimal)
No parity (8n1) 0 … 5
Even parity (8e1) 100 … 105
Odd parity (8o1) 200 … 205
1200 Bd 0 | 100 | 200
2400 Bd 1 | 101 | 201
4800 Bd 2 | 102 | 202
9600 Bd 3 | 103 | 203
19.2 kBd 4 | 104 | 204
38.4 kBd 5 | 105 | 205
For even parity and a baud rate of 9600 Bd enter 103 as the value.
The number of stop bits cannot be changed (always 1). The factory
setting is: no parity, 19.2 kBd