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Manual – MOVIDRIVE® MDX61B MOVI-PLC® DHP11B Control Card
6
Structure of the DP-V1 parameter channel
DP-V1 Functions
PROFIdrive
parameter orders
The PROFIdrive parameter channel of the DHP11B control card is directly mapped in
the structure of data set 47. Parameter access with PROFIdrive services usually takes
place according to the structure described below. The typical message sequence for
data set 47 is used. PROFIdrive only defines the two request IDs
•
Request ID:0x01request parameter (PROFIdrive)
•
Request ID:0x02change parameter (PROFIdrive)
This means there is restricted data access in comparison with the MOVILINK
®
services.
Example for read-
ing a parameter via
PROFIdrive
The following tables show an example of the structure of the
Write.request
and
Read.res
user data for reading an individual parameter via the MOVILINK
®
parameter channel.
Sending parameter request
The following table shows the coding of the user data for the
Write.req
service including
the DPV1 header. The
Write.req
service is used to transfer the parameter setting order
to the DHP11B control card.
The request ID
0x02
=
change parameter
(PROFIdrive) ensures remanent write access
to the selected parameter. Consequently, the internal flash of the DHP11B control card
is written with each write access. Use the MOVILINK
®
service
Write parameter volatile
service if parameters must be written cyclically at short intervals. With this service, you
only alter the parameter values in the RAM of the DHP11B control card.
Service:
Write.request
Slot_Number
0
random, (is not evaluated)
Index
47
Index of the data set; constant index 47
Length
10
10 byte user data for parameter request
Byte
Field
Value
Description
0
Request reference
0x01
Individual reference number for the parameter setting
order that is reflected in the parameter response
1
Request ID
0x01
Request parameter (PROFIdrive)
2
Axis
0x00
Axis number; 0 = single axis
3
No. of parameters
0x01
1 parameter
4
Attributes
0x10
Access to parameter value
5
No. of elements
0x00
0 = access to direct value, no subelement
6..7
Parameter Number
0x206C
MOVILINK
®
index 8300 = “Firmware version”
8..9
Subindex
0x0000
Subindex 0
0
0
I