DSU100
IO-Link data memory
14
If writing was unsuccessful, an error value is shown in the process image.
Byte
Process data output
Process data input
0
command value = 0x02
command value = 0x02
1
status
status
2
data 0
data 0
3
data 1
data 1
4
data 2
data 2
5
data 3
data 3
6
data 4
data 4
7
data 5
data 5
8
data 6
data 6
9
data 7
data 7
10
data 8
data 8
11
data 9
data 9
12
data 10
data 10
13
data 11
data 11
14
data 12
data 12
15
data 13
data 13
16
data 14
data 14
17
data 15
data 15
18
data 16
data 16
19
data 17
data 17
20
data 18
data 18
21
data 19
data 19
22
data 20
data 20
23
data 21
data 21
24
data 22
data 22
25
data 23
data 23
26
data 24
data 24
27
data 25
data 25
28
data 26
data 26
29
data 27
data 27
30
ignored
0x00
31
ignored
error value
8.6 "Read data" operating mode
In the "Read data" operating mode more than 28 bytes can be read with a read operation. The data is
sequentially transferred from the device to the controller.
Transfer data from the device to the controller:
u
The controller sets the command value "0x03", the address (32 bits) and the data length (32 bits) in
the process data output image.
u
The controller starts the read operation with the status bit "Cmd Start".
u
The device acknowledges the start of the read operation by setting the status bit "Cmd Start
Acknowledge" in the process data input image.
