Danfoss VLT Brook Crompton Motor FCM 300 Design Manual page 64

Programming
- with 12 bytes built up as shown above, with
parameter and process block
- with four bytes, which is the process block from
the 12 byte telegram
3 3
1. Parameter bytes
Illustration 3.33
Commands and replies (AK)
Bits no. 12-15 are used for transmitting commands from
master to slave and the slave's processed reply back to the
master.
Commands master ⇒slave:
Bit no.
15 14
0 0
0 0
0 0
0 0
1 1
1 1
1 1
Table 3.18
Reply slave ⇒ master:
Bit no.
62
VLT
13 12 Command
0 0 No command
0 1 Read parameter value
1 0 Write parameter value in RAM
(word)
1 1 Write parameter value in RAM
(double word)
0 1 Write parameter value in RAM and
EEPROM (double word)
1 0 Write parameter value in RAM and
EEPROM (word)
1 1 Read text
MG03BA02 - VLT
®
DriveMotor FCM Series
15 14
0 0
0 0
0 0
0 1
1 1
Table 3.19
If the command cannot be executed, the slave will send
this reply (0111) and give the following error message in
the parameter value:
Error code
(reply 0111)
0
1
2
3
4
5
17
130
131
Table 3.20
Parameter number (PNU)
Bits no. 0-10 are used for transmitting parameter numbers.
The function of a given parameter can be seen from the
parameter description.
Illustration 3.34
Index
Index is used together with the parameter number for
read/write access to parameters of the array type (par. 615,
616 and 617).
Parameter value (PWE)
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is a registered Danfoss trademark
13 12 Reply
0 0 No reply
0 1 Parameter value transferred (word)
1 0 Parameter value transferred
(double word)
1 1 Command cannot be executed
1 1 Text transferred
Error message
The parameter number used does not exist
There is no write access to the parameter called
The data value exceeds the parameter limits
The used sub-index does not exist
The parameter is not of the array type
The data type does not match the parameter
called
Data change in the parameter called is not
possible in the present mode of the FC motor.
E.g. some parameters can only be changed
when the motor has stopped
There is no bus access to the parameter called
Data change is not possible because factory
Setup has been selected