Lenze PROFIBUS E84AYCPM - Write Request: Setting the Deceleration Time for Quick Stop (QSP)

Lenze · E84AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 5.0 EN · 11/2012 · TD17 60
9 Parameter data transfer
9.2 DRIVECOM parameter data channel (DP-V0)
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9.2.7.2 Write request: Setting the deceleration time for quick stop (QSP)
In the inverter, the deceleration time for quick stop (QSP) is to be set to 50 ms.
• Code to be written: C00105
Byte 1: Service (request)
Request = 0t110010
bin
• Bit 0 ... 2 = 010
bin
for write request
• Bit 3 = 0 (reserved)
• Bit 4/5 = 11
bin
for 4-byte data length
• Bit 6 = handshake bit (t ≡ status is changed in the response telegram)
• Bit 7 = status bit (only relevant for the response telegram)
Byte 2: Subindex
Subindex = 0 because code C00105 does not contain any subindices.
Bytes 3+4: Index
Index = 24575 - code number = 24575 - 105 = 24470 = 0x5F96
• Byte 3 (high byte) = 0x5F
• Byte 4 (low byte) = 0x96
Bytes 5 ... 8: Data
The parameter value of 0.05 s to be set is multiplied by the code-specific factor of "1000" and
entered in the user data:
Data 1 ... 4 = 0.05 [s] x 1000 (internal factor) = 50 = 0x00000032
Result:
Request telegram from master to drive:
Response telegram from drive to master (for correct execution):
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 Data 3 Data 2 Data 1
0x72 0x00 0x5F 0x96 0x00 0x00 0x00 0x32
0t110010
bin
00000000
bin
01011111
bin
10010110
bin
00000000
bin
00000000
bin
00000000
bin
00110010
bin
Waiting for change of handshake bit 6 in service byte 1 of the response
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 Data 3 Data 2 Data 1
0x40 0x00 0x5F 0x96 0x00 0x00 0x00 0x32
0t000000
bin
00000000
bin
01011111
bin
10010110
bin
00000000
bin
00000000
bin
00000000
bin
00110010
bin