Lenze E84Dxxxx - Manual (Page 43)

Communication manual 8400 protec PROFIBUS
Parameter data transfer
DP-V0 parameter data channel (DRIVECOM profile)
43
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EDS84DPBUS EN 2.0 - 09/2010
8.2.7 Telegram examples
8.2.7.1 Read request: Querying the heatsink temperature
The heatsink temperature of the controller is to be read.
 Code to be read: C00061
 Heatsink temperature: 43 °C
Byte 1: Service (request)
 Request = 0t110001
bin
– Bit 0 ... 2 = 001
bin
for read request
– Bit 3 = 0 (reserved)
– Bit 4/5 = 01
bin
for 2-byte data length (only relevant for the response message)
– Bit 6 = handshake bit (t ≡ status is changed in the response message)
– Bit 7 = status bit (only relevant for the response message)
Byte 2: Subindex
 Subindex = 0 because code C00061 contains no subindexes.
Bytes 3 + 4: Index
 Index = 24575 - code number = 24575 - 61 = 24514 = 0x5FC2
– Byte 3 (high byte) = 0x5F
– Byte 4 (low byte) = 0xC2
Bytes 5 ... 8: Data
 The response message contains the value of code C00061:
– Data 3 + 4 = 43 [°C] x 1 (internal factor) = 43 = 0x002B
Result:
 Request message from master to drive:
 Response message from drive to master (for faultless 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
0x01 0x00 0x5F 0xC2 0x00 0x00 0x00 0x00
0t000001
bin
00000000
bin
01011111
bin
11000010
bin
00000000
bin
00000000
bin
00000000
bin
00000000
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
0x11 0x00 0x5F 0xC2 0x00 0x2B 0x00 0x00
0t010001
bin
00000000
bin
01011111
bin
11000010
bin
00000000
bin
00101011
bin
00000000
bin
00000000
bin