Delta Electronics RTU-DNET - Manual (Page 19)

DeviceNet Remote I/O Communication Module RTU-DNET
DVP-PLC Application Manual 17
Master
(byte)
RTU-DNET
… …
z RTU-DNET → DeviceNet master
Master
(byte)
RTU-DNET
0 Low byte of status word of RTU-DNET
1
RTU-DNET
High byte of status word of RTU-DNET
2 Low byte of the 1 st special module output channel 1
3 High byte of the 1 st special module output channel 1
4 Low byte of the 1
st
special module output channel 2
5 High byte of the 1
st
special module output channel 2
…
Special module
…
N X0 ~ X7 of the 1
st
Slim DI/DO
N+1 X0 ~ X7 of the 2
nd
Slim DI/DO
…
Slim DI/DO
…
Note:
z If you choose to make the control word and status word of RTU-DNET to be I/O data, the first word in
the I/O data area will automatically be distributed to control word and status word.
z In the alignment of RTU-DNET and the extension modules connected to it, the data of special
modules appear prior to the data of Slim DI/DO extension units.
4.4 Example
1. How to read the I/O data in the extension module connected to RTU-DNET.
Assume the extension modules connected to RTU-DNET are:
R
T
U
-D
N
E
T
D
V
P
-0
2
D
A
D
V
P
-0
8
S
T
D
V
P
-1
6
S
P
D
V
P
-0
4
A
D
D
V
P
-0
4
T
C
D
V
P
-0
4
P
T
If the I/O data do not include control word and status word of RTU-DNET, the information of the extension
module connected to RTU-DNET are as follows: