WEG CFW08 Vector inverter User Manual page 159

CFW-08 OPTIONS AND ACCESSORIES
158
Query (Master)
Slave address
Function
MEI Type
Read Code
Object Number
CRC-
CRC+
The fields are repeated according to the number of objects.
This function permits reading of three information categories:
Basic, Regular and Extended and each category are formed by a group of
objects. Each object is formed by a sequence of ASCII characters For the
CFW-08 are only available basic information formed by three objects:
Object 00 - VendorName: always 'WEG'.
Object 01 - ProductCode: formed by the product code (CFW-08), plus
the rated inverter current.
Object 02 - MajorMinorRevision: it indicates the inverter firmware
version, in 'VX.XX' format.
The read code indicates which information categories are being read and
if the objects are accessed individually of by sequence.
In the example, the inverter supports 01 (basic information in sequence),
and 04 (individual access to the objects).
The other fields for the CFW-08 have fixed values.
Example: read o basic information in sequence, starting from object
00, of a CFW-08 at address 1:
Query (Master)
Field
Slave address
Function
MEI Type
Read Code
Object Number
CRC-
CRC+
Value Field
01h Slave address
2Bh Function
0Eh MEI Type
01h Read Code
00h Conformity Level
70h More Follows
77h Next Object
Number of Objects
Object Code
Object Length
Object Value
Object Code
Object Length
Object Value
Object Code
Object Length
Object Value
CRC-
CRC+
Response (Slave)
Slave address
Function
MEI Type
Conformity Level
More Follows
Next Object
Number of Objects
Object Code*
Object length*
Object Value*
CRC-
CRC+
Response (Slave)
Value
01h
2Bh
0Eh
01h
51h
00h
00h
03h
00h
03h
'WEG'
01h
0Eh
'CFW-08 7.0A'
02h
05h
'V3.77'
C7h
DEh