Example - Delta Electronics RTU-DNET Applications Manual

Master
(byte)
...
RTU-DNET → DeviceNet master
Master
(byte)
...
N
N+1
...
Note:
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.
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:
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:
DVP-PLC Application Manual
DeviceNet Remote I/O Communication Module RTU-DNET
0
RTU-DNET
1
2
3
4 Special module
5
Slim DI/DO
RTU-DNET
RTU-DNET
Low byte of status word of RTU-DNET
High byte of status word of RTU-DNET
st
Low byte of the 1 special module output channel 1
st
High byte of the 1 special module output channel 1
st
Low byte of the 1 special module output channel 2
st
High byte of the 1 special module output channel 2
X0 ~ X7 of the 1
X0 ~ X7 of the 2
...
...
st
Slim DI/DO
nd
Slim DI/DO
...
17