Delta Electronics RTU-DNET - Manual (Page 11)

DeviceNet Remote I/O Communication Module RTU-DNET
DVP-PLC Application Manual 9
No. Item Unit Explanation
5
Length of input data
of special module
Word
The length of input data of the special module connected to
RTU-DNET
6
Length of output
data of special
module
Word
The length of output data of the special module connected to
RTU-DNET
7
Length of input I/O
data
Byte
The sum of the length of the status word of RTU-DNET and the
input data of the special module connected to it. One input
channel of the special module occupies 2 bytes. 8 points of the
digital input are counted as 1 byte.
8
Length of output I/O
data
Byte
The sum of the length of the control word of RTU-DNET and
theoutput data of the special module connected to it. One output
channel of the special module occupies 2 bytes. 8 points of the
digital output are counted as 1 byte.
9
Number of special
modules
Unit
The number of special modules connected to RTU-DNET.
Range: 0 ~ 8
10
Diagnostic interval
time
Sec
The interval when RTU-DNET executes diagnosis.
Range: 1 ~ 65, Default: 5 secs
11
Special module
offline treatment
N/A
How RTU-DNET will react when the special module connected
to it is offline. You can choose “Ignored”, “Alarm” or “Stop
DeviceNet IO”. Default: Alarm
12
Special module erro
treatment
N/A
How RTU-DNET will react when it detacts errors. You can
choose “Ignored”, “Alarm” or “Stop DeviceNet IO”. Default:
Alarm
13 Reset RTU-DNET N/A Reset the configuration of RTU-DNET to default settings.
14
Add control word
and status word to
I/O data
N/A
For you to decide whether to add control word and status word
to I/O data. When you choose not to do it, the I/O data in
RTU-DNET and DeviceNet master will not include control word
and status word. If you choose to add them in, the I/O data in
RTU-DNET and DeviceNet master will include control word and
status word.
15 Work mode N/A
For you to set up the work mode of the special module
connected to RTU-DNET. When set to “auto mode”, RTU-DNET
will configure default CR of the special module as DeviceNet I/O
mapping data. When set to “custom mode”, you can configure
any CR in the special module as DeviceNet I/O mapping data.
16
Number of input
data connected
---
The number of input data of the special module connected to
RTU-DNET
17
Number of output
data connected
---
The number of output data of the special module connected to
RTU-DNET
18 Length of input data Word
The sum of the length of input data of the special modules
connected to RTU-DNET
19
Length of output
data
Word
The sum of the length of output data of the special modules
connected to RTU-DNET
20 I/O mapping N/A
The I/O mapping relation between RTU-DNET and the special
module connected to it
4.2 Format of Requet Message and Response Message
1. RTU-DNET supports using DeviceNet explicit messages to poll special modules.
„ Format of request messages
Byte position Data written into special module Data read from special module
0 Frag[0]+XID+MAC ID Frag[0]+XID+MAC ID