MVW3000 | 9-35
9
Communication Networks
MVW3000 | 9-35
Table 9.27:
Telegram structure
Request (Master)
Response (Slave)
Slave address
Slave address
Function
Function
MEI Type
MEI Type
Read Code
Conformity Level
Object Number
More Follows
CRC-
Next Object
CRC+
Number of Objects
-
Object Code
-
Object Length
-
Object Value
-
CRC-
-
CRC+
The fields are repeated according to the number of objects.
This function allows reading three information categories: Basic, Regular and Extended, and each category is
formed by a group of objects. Each object is formed by a sequence of ASCII characters. For the MVW3000 only
basic information is available, composed by three objects:
Object 00 - VendorName: Always ‘WEG’.
Object 01 - ProductCode: Formed by the product code (MVW3000), plus the inverter rated current.
Object 02 - MajorMinorRevision: indica a versão de firmware do inversor, no formato ‘VX.XX’.
The Read Code indicates the information categories being read, and whether the objects are being accessed in
a sequence or individually. In the case, the inverter supports the codes 01 (basic information in sequence), and
04 (individual access to the objects).
The remaining fields for MVW3000 have fixed values.
Example: Sequential reading of basic information, starting from the object 00 of an MVW3000 at the address 1:
Table 9.28:
Example of telegram structure
Request (Master)
Response (Slave)
Field
Value
Field
Value
Slave address
01h
Slave address
01h
Function
2Bh
Function
2Bh
MEI Type
0Eh
MEI Type
0Eh
Read Code
01h
Read Code
01h
Object Number
00h
Conformity Level
51h
CRC-
70h
More Follows
00h
CRC+
77h
Next Object
00h
-
-
Number of Objects
03h
-
-
Object Code
00h
-
-
Object Length
03h
-
-
Object Value
‘WEG’
-
-
Object Code
01h
-
-
Object Length
0Eh
-
-
Object Value
‘MVW3000 7.0A’
-
-
Object Code
02h
-
-
Object Length
05h
-
-
Object Value
‘V2.09’
-
-
CRC-
B8h
-
-
CRC+
39h
Summary of Contents for MVW3000 A0040 V023
Page 2: ......
Page 4: ......
Page 5: ...User s Manual Series MVW3000 Language English Document 10004823674 00 Publication Date 03 2017...
Page 6: ...Summary of Reviews Version Review Description R00 First edition...
Page 12: ...1 4 MVW3000 1 Safety Notices...
Page 58: ...6 18 MVW3000 6 Installation Connection and Energization...