IFM DSU100, Руководство по эксплуатации

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IO-Link data memory DSU100
17
Command value Address Length Data 0 to 27 Block counter Status bit "Cmd Start" Command value Data 0 to 27 Block counter Error value Status bit "Cmd End" Status bit "Cmd Start"
Controller with-
draws command
value 0x00 0x00 0x00 0x00 0x00 0 0x03 0x00 0x01 0x22 1 1
The device car-
ries out the pre-
set command 0x00 0x00 0x00 0x00 0x00 0 0x00 UID 0x00 0x00 0 0
8.7 "Write data" operating mode
In the "Write data" operating mode more than 28 bytes can be written with one write operation. The
data is sequentially transferred from the controller to the device.
Transferring data from the controller to the device:
u
The controller sets the command value "0x04", the address (32 bits) and the data length (32 bits) in
the process data output image.
u
The controller starts the write operation with the status bit "Cmd Start".
u
The device acknowledges the start of the write operation by setting the status bit "Cmd Start
Acknowledge" in the process data input image.
u
The controller fills the data in the process data output image (data 0 to 27) and increases the block
counter by 1.
u
The device acknowledges receipt of the data by increasing the block counter in the process data
output image by 1.
u
The two previous steps are repeated until all data has been transferred.
u
The device sets the status bit "Cmd End" with the last transfer to the internal memory. Then the
write operation is terminated.
w
If writing was unsuccessful, the device sets the error value and the status bit "Cmd End" in
the process image. Data transfer is interrupted.
Byte
Process data output when
starting the write operation Process data output during
data transfer
Process data input
0 command value=0x04 command value=0x04 command value=0x04
1 status status status
2 ignored data 0 0x00
3 ignored data 1 0x00
4 address 3 data 2 0x00
5 address 2 data 3 0x00
6 address 1 data 4 0x00
7 address 0 data 5 0x00
8 length 3 data 6 0x00
9 length 2 data 7 0x00
10 length 1 data 8 0x00
11 length 0 data 9 0x00
12 ignored data 10 0x00
13 ignored data 11 0x00
14 ignored data 12 0x00
15 ignored data 13 0x00