Parameter data transfer – Lenze EMF2133IB User Manual
Page 90

Parameter data transfer
DRIVECOM parameter data channel
Telegram structure
l
90
EDSMF2133IB EN 5.0
Bytes 5 ... 8: Parameter value (data) / error information (error)
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Service
Subindex
Index
High byte
Index
Low byte
Data 4 /
Error 4
Data 3 /
Error 3
Data 2 /
Error 2
Data 1 /
Error 1
The status of the (status) bit 7 in byte 1 (job) determines the meaning of this data field:
Meaning of the bytes 5 ... 8 if ...
Bit 7 = 0
Bit 7 = 1
Parameter value (data 1 ... 4)
Error information (error 1 ... 4) for an invalid access.
Parameter value (data)
Depending on the data format, the length of the parameter value is between 1 to 4 bytes.
Data are saved in the Motorola format, i. e. first the high byte or high word, then the low
byte or low word.
Byte 5
Byte 6
Byte 7
Byte 8
High byte
Low byte
High byte
Low byte
High word
Low word
Double word
Assignment of bytes 5 .. 8 with parameter values of different lengths
Byte 5
Byte 6
Byte 7
Byte 8
Parameter value
(Length 1)
00
00
00
Parameter value (length 2)
00
00
Parameter value (length 4)
)
Note!
Strings or data blocks cannot be transmitted.