SEW-Eurodrive MOVIDRIVE compact MCH41A, System Manual

Page: 387 / 436

System Manual – MOVIDRIVE® compact Drive Inverters
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Starting up the inverter with INTERBUS (MCH42A)
Startup
Writing a drive
parameter The "Write" service is used for writing a drive parameter (with index
≤
8800). All drive
parameters are generally 4 bytes long (1 double word).
Example
Writing the ramp time 1.65 s to P130 "Ramp t11 UP CW"
Index: 8470 dec = 2116 hex
Value: 1.65s = 1650 ms = 1650 dec = 0000 0672 hex
The parameter data are represented in Motorola format (Simatic format) as follows:
Refer to the appendix in the "MOVIDRIVE
®
Fieldbus Unit Profile" manual for more
information on coding drive parameters.
Once you have sent this service, you should receive the positive message
"Write_Confirmation".
The table shows the "Value for parameter too great" return code, by way of example.
Data [1] = High Byte Data [2] = Low Byte Data [3] = High Byte Data [4] = Low Byte
00 hex 00 hex 06 hex 72 hex
Word Meaning Coding (hex)
1 Command_Code = Write_Request 00 82
2 Parameter_Count 00 05
3 Invoke_ID Comm._Reference 00 02
4 Index 21 16
5 Subindex Length 00 04
6 Data [1] Data [2] 00 00
7 Data [3] Data [4] 06 72
Bits 15 ... 8 7 ... 0
Word Meaning Coding (hex)
1 Message_Code = Write_Confirmation (+) 80 82
2 Parameter_Count 00 02
3 Invoke_ID Comm._Reference 00 02
4 Result (+) 00 00
Bits 15 ... 8 7 ... 0
Word Meaning Coding (hex)
1 Message_Code = Write_Confirmation (-) 80 82
2 Parameter_Count 00 03
3 Invoke_ID Comm._Reference 00 02
4 Error_Class Error_Code 08 00
5 Additional_Code 00 15
Bits 15 ... 8 7 ... 0
0 0
I