SEW-Eurodrive MOVIDRIVE DFP11A, Руководство пользователя, Страница: 41 / 52

MOVIDRIVE
®
PROFIBUS DFP11A
41
The PROFIBUS-FMS
Interface
4
With the WRITE service to the “Download Parameter Block” object, a parameterization mechanism
is started in the fieldbus option pcb that successively transfers to the drive inverter all the parame-
ters in the user data area of the object.
After successfully processing the Download Parameter Block, i.e. all parameters transferred from
the FMS-master have been written, the Write service is ended with a positive Write Response. In
the event of an error, a negative Write Response is returned. In this event, the return code will con-
tain more precise details about the type of error and, in addition, the parameter number (1..38)
where the error occurred (see example).
Example: Error writing parameter 11
If an error occurs when a parameter is written, processing of the parameter block is aborted. All
parameters in the block following the faulty parameter are not transmitted to the drive inverter and
remain unchanged.
4.2.6 “MOVILINK Cyclic Parameter Channel” Object
This object is 8 bytes long and comprises the cyclic MOVILINK
®
parameter channel. All MOVILINK
®
communications services can be executed by Reading and Writing to this object in alternating
cycles. The communications service is executed only when the handshake bit is toggled in the
management byte. The MOVILINK
®
parameter channel permits access to all indices, including the
IPOS variable and program memory.
Fig. 41 shows the structure of this communications object. For the structure of the parameter
channel please refer to the “MOVILINK
®
Communications Device Profile” Manual and the DP
Section of this Manual.
01236AEN
Fig. 41: Structure of the “MOVILINK Cyclic Parameter Channel”object
The “MOVILINK Cyclic Parameter Channel” object is only handled locally on the fieldbus option pcb
and is defined as shown in Table 15.
Table 15: Definition of the “MOVILINK Cyclic Parameter Channel” object
Write Error Response:
Error Class:
Error Code:
Additional Code High:
Additional Code Low:
8
0
11dec
15 hex
Other
Other
Error writing parameter 11
Value too large
Index: 8298
Object code: 7 (Simple variable)
Data type index: 10 (Octet string)
Length: 8
Local address: -
Password: -
Access groups: -
Access rights: Read all/Write all
Name[16]: -
Extension length: -
Octet 0 Octet 1 Octet 2 Octet 3 Octet 4 Octet 5 Octet 6 Octet 7
4-byte data Parameter index
Manage-
ment
Management
Reserved
Index
high Index
low
Data
MSB
Data Data
Data
LSB
Reserved