SEW-Eurodrive MOVI-PLC basic DHP11B-T0, Руководство пользователя

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6
PROFIBUS-DP-V1 Functions
Structure of the DP-V1 parameter channel
Manual – MOVI-PLC
®
basic DHP11B.. controller
65
Example for
reading a
parameter via
MOVILINK
®
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 displays the code of the user data for the Write.req service specifying
the DP-V1 header.
The Write.req service is used to transfer the parameter setting request to the MOVI-
PLC
®
basic DHP11B.. controller. The firmware version is read.
Query parameter response
The following table shows the code of the Read.req user data including the DP-V1
header.
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 request is reflected in the parameter
response
1 Request ID 0x40 SEW MOVILINK
®
service
2 Axis 0x00 Axis number; 0 = single axis
3 No. of parameters 0x01 1 parameter
4 Attributes 0x10 MOVILINK
®
service "Read parameter"
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
Service Read.request
Slot_Number 0 Random, (is not evaluated)
Index 47 Index of the data set; constant index 47
Length 240 Maximum length of response buffer in the DP-V1 master
0 0
I