SSD Drives DIGIVEX Motion PVD 3554, Руководство пользователя и по вводу в эксплуатацию

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DIGIVEX Motion - PROFIBUS
18
PVD 3554 GB 01/2004
2.6 DPV1-Profidrive V3.0 mechanism for processing
parameters
This mechanism is supported by the range S7-400 which has the latest firmware as well as the
PME, Parvex Motion Explorer, tool through the PROFIBUS PC interfaces. It has the advantage of
reducing the cycle time since the PKW cyclical exchange is no longer required to occasionally
access the parameters. This mechanism is also used to access large scale parameters (for
example DIGIVEX Motion firmware upgrade by PME).
This mechanism can be broken down into 4 phases:
1) Parameter request (from the Master)
This 1
st
phase is carried out as the result of a DB47 data block write request integrating either a
read request, or a write parameter request:
DPV1 Write Header
Fct_num = Wr (octet 0) Slot_num Index = DB47 Length (bytes)
0x5F 0x00 0x2F 0x0A(Rd), > 0x0C(Wr)
Parameter Request Header
Request ref Request ID Axis No. of parameters
Selected by the
master 0x01 (Rd), 0x02 (Wr) 0x00 0x01
Parameter address
Attribute No. of elements Param. Num. ( 16-bit ) Subindex ( 16-bit )
0x10 0x00 0xXXXX 0xXXXX
Parameter value (for a write request only)
Format No. of values Value
cf. table page 2 0x01 Variable size
2) Request acknowledgment (from the Slave)
DPV1 Write Acknowledgement
Fct_num = Wr (octet 0) Slot_num Index = DB47 Length (bytes)
0x5F 0x00 0x2F 0x0A(Rd), > 0x0C(Wr)
3) Response request (from the Master)
DPV1 Read Header
Fct_num = Rd (octet 0) Slot_num Index = DB47 Length (bytes)
0x5E 0x00 0x2F 0xF0 (max. size)