Delta Electronics RTU-DNET Instructions for use

RTU-DNET
DeviceNet Remote I/O Communication
Module
Application Manual

DeviceNet Remote I/O Communication Module RTU-DNET
DVP-PLC Application Manual 1
Warning
3 Please read this instruction carefully before use and follow this instruction to operate the device in order to prevent
damages on the device or injuries to staff.
3 Switch off the power before wiring.
3 RTU-DNET is an OPEN TYPE device and therefore should be installed in an enclosure free of airborne dust,
humidity, electric shock and vibration. The enclosure should prevent non-maintenance staff from operating the
device (e.g. key or specific tools are required for operating the enclosure) in case danger and damage on the
device may occur.
3 RTU-DNET is to be used for controlling the operating machine and equipment. In order not to damage it, only
qualified professional staff familiar with the structure and operation of RTU-DNET can install, operate, wire and
maintain it.
3 DO NOT connect input AC power supply to any of the I/O terminals; otherwise serious damage may occur. Check
all the wirings again before switching on the power and DO NOT touch any terminal when the power is switched
on. Make sure the ground terminal is correctly grounded in order to prevent electromagnetic interference.
Table of Contents
1INTRODUCTION ....................................................................................................................................3
1.1 Features......................................................................................................................................3
1.2 Functions.....................................................................................................................................3
1.3 Specifications..............................................................................................................................3
1.4 Extension Modules Connectable to RTU-DNET .........................................................................4
2PRODUCT PROFILE & OUTLINE .........................................................................................................5
2.1 Dimension ...................................................................................................................................5
2.2 Product Profiles...........................................................................................................................5
2.3 DeviceNet Connection Port.........................................................................................................6
2.4 RUN/STOP Switch......................................................................................................................6
2.5 Address Switch ...........................................................................................................................6
2.6 Function Switch...........................................................................................................................6
2.7 Extension Port.............................................................................................................................7
3BASIC OPERATION...............................................................................................................................7
3.1 Connecting RTU-DNET to DVP Slim DI/DO Extension Unit .......................................................7
3.2 Installing RTU-DNET and DVP Slim DI/DO on DIN Rail.............................................................7
3.3 Connecting to DeviceNet Connection Port..................................................................................8
4HOW TO CONFIGURE RTU-DNET .......................................................................................................8
4.1 Terms ..........................................................................................................................................8
4.2 Format of Requet Message and Response Message.................................................................9

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4.3 DeviceNet I/O Mapping Data....................................................................................................14
4.4 Example....................................................................................................................................17
5HOW TO CONSTRUCT A DEVICENET NETWORK USING RTU-DNET...........................................22
5.1 How to Construct DeviceNet by RTU-DNET ............................................................................22
5.2 How to Configure Network by DeviceNet Network Configuration Tool.....................................22
6LED INDICATOR & TROUBLE-SHOOTING .......................................................................................31
6.1 POWER LED............................................................................................................................ 31
6.2 NS LED.....................................................................................................................................31
6.3 MS LED ....................................................................................................................................31
6.4 ALARM LED.............................................................................................................................31
6.5 RUN LED..................................................................................................................................32

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1 Introduction
1. To ensure correct installation and operation of RTU-DNET, please read this chapter carefully before using
your RTU-DNET.
2. This chapter only provides introductory information on RTU-DNET. For more detailed information on
DeviceNet protocol, please refer to relevant references or literatures.
3. RTU-DNET is a remote I/O communication module applicable to the connection between DeviceNet and DVP
Slim DIDO module and special modules. RTU-DNET offers functions such as status diagnosis, error
treatment and so on.
1.1 Features
zSupports Group 2 only servers.
zSupports explicit connection via predefined Master/Slave connection set.
zSupports polling
zSupports EDS file configuration in DeviceNet network configuration tools.
zMax. 256 digital I/O points extendable.
zMax. 8 special modules extendable.
1.2 Functions
Item Explanation
Graphic configuration
interface RTU-DNET supports graphic configuration interface in DeviceNet network configuration tools.
Data retention The user can choose either to retain or give up the data in the register when
RTU-DNET is offline.
A
uto extension module
identification
The user can automatically identify the special module or the enumber of points on
the DVP Slim DI/DO extension unit connected to RTU-DNET through DeviceNet
network configuration tool.
Diagnosis RTU-DNET is able to diagnose the status of the special module connected to it.
When an error occurs, TheALARM LED on RTU-DNET will flash in red.
Status inquiry RTU-DNET is able to inquire the connection status between itself and the extension
module in DeviceNet network configuration tool.
Error inquiry The user can read the error through DeviceNet network configuration tool.
Error treatment The user can choose a method to correct the error through DeviceNet network
configuration tool.
Flexible configuration The user can configure the control register (CR) in the special module in any way as
the I/O mapping data for DeviceNet.
1.3 Specifications
DeviceNet connection
Transmission method CAN
Electrical isolation 500 VDC
Interface Removable connector (5.08mm)
Transmission cable 2-wire twister shielded cable with 2-wire bus power and drain
Communication
Message type I/O polling, explicit

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Baud rates 125 kbps; 250 kbps; 500 kbps
Electrical specification
Voltage 11 ~ 25 VDC, supplied by internal bus from PLC MPU
Current 28mA(typical), 125mAimpulse current (24 VDC)
Environment
Noise immunity
ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge
EFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2KV, Digital I/O: 1KV
Analog & Communication I/O: 1KV
Damped-Oscillatory Wave: Power Line: 1KV, Digital I/O: 1KV
RS (IEC 61131-2, IEC 61000-4-3): 26MHz ~ 1GHz, 10V/m
Operation 0ºC ~ 55ºC (temperature); 50 ~ 95% (humidity); pollution degree 2
Storage -25ºC ~ 70ºC (temperature); 5 ~ 95% (humidity)
Vibration/shock
resistance Standard: IEC 61131-2, IEC 68-2-6 (TEST Fc)/IEC 61131-2 & IEC 68-2-27 (TEST Ea)
Certificates IEC 61131-2, UL508
1.4 Extension Modules Connectable to RTU-DNET
RTU-DNET
DVP-02DA DVP-08ST
DVP-16SP
DVP-04AD
DVP-04TC
DVP-04PT
DVP Slim DI/DO extension units connectable to RTU-DNET
Slim DI/DO
(model name) I/O mapping data
(DeviceNet →RTU-DNET) I/O mapping data (RTU-DNET →DeviceNet)
DVP-08SM11N N/A 8 bits
DVP-08SN11R/T 8 bits N/A
DVP-08SP11R/T 8 bits 8 bits
DVP-16SP11R/T 8 bits 8 bits
DVP-08ST N/A 8 bits
Special modules connectable to RTU-DNET
Default I/O mapping data
(DeviceNet →RTU-DNET) I/O mapping data (RTU-DNET →DeviceNet)
Special module
(model name) Start CR Length (words) Start CR Length (words)
DVP-02DA CR#10 2 N/A N/A
DVP-04DA CR#6 4 N/A N/A
DVP-04AD N/A N/A CR#12 4
DVP-06AD N/A N/A CR#12 6

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Default I/O mapping data
(DeviceNet →RTU-DNET) I/O mapping data (RTU-DNET →DeviceNet)
Special module
(model name) Start CR Length (words) Start CR Length (words)
DVP-04TC N/A N/A CR#14 4
DVP-04PT N/A N/A CR#18 4
DVP-06XA CR#10 2 CR#12 4
DVP-01PU CR#42 4 CR#33 4
Note:
While connected to a special module, the start CR and length of upload/download data of RTU-DNET can be set
up in DeviceNet network configuration tool.
2 Product Profile & Outline
2.1 Dimension
9
1
RUN
STOP
7
6
8
9
1
0
2
3
0
5
4
x10
0
IN 0
IN 1
DR1
DR0
RTU-DNET
POWER
MS RUN
ALARM 7
8
6
4
2
3
x10
1
NS
5
2.2 Product Profiles
9
1
RUN
STOP
7
6
8
9
1
0
2
3
0
5
4
x10
0
IN 0
IN 1
DR 1
DR 0
RTU-DNET
POWER
MS RUN
ALARM 7
8
6
4
2
3
x10
1
NS
5
2
3
5
4
6
7
8
9
10
11
12
1
1. Extension port 7. NS (Network Status) indicator
2. Address switch 8. RUN indicator
3. Function switch 9. ALARM indicator
4. RUN/STOP switch 10. DeviceNet connection port
5. POWER indicator 11. DIN rail
6. MS (Module Status) indicator 12. DIN rail clip

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2.3 DeviceNet Connection Port
The connector is used on the connection to DeviceNet. Wire by using the connector enclosed with RTU-DNET.
PIN Signal Color Content
1 V- Black 0 VDC
2 CAN_L Blue Signal-
3 SHIELD - Shielded
4 CAN_H White Signal+
5 V+ Red 24 VDC
1
2
3
4
5
2.4 RUN/STOP Switch
RUN/STOP action Explanation
STOP →RUN 1. Re-detecting the extension module.
2. Reading/writing the data in the extension
module.
RUN →STOP Stop reading/writing the data in the extension
module.
RUN
STOP
2.5 Address Switch
The switch is used on setting up the node address of RTU-DNET on DeviceNet. Range: 00 ~ 63 (64 ~ 99 are
forbidden).
Switch setting Content
0 ~ 63 Valid DeviceNet node address
64 ~ 99 Invalid DeviceNet node address
9
1
6
4
5
0
0
9
1
3
2
7
8
2
5
6
4
3
7
8
Example: If you need to set the node address of RTU-DNET to 26, simply switch the corresponding switch of x101
to 2 and the corresponding switch of x100to 6.
Note:
zPlease set up the node address when the power is switched off.After the setup is completed, re-power
RTU-DNET.
zWhen RTU-DNET is operating, changing the setting of node address will be invalid.
zUse slotted screwdriver to rotate the switch carefully in case you scratch the switch.
2.6 Function Switch
The function switches are for:
zSetting up data retention function (IN0)
zSetting up the baud rate of DeviceNet (DR0 ~ DR1)
DR1 DR0 Baud rate
OFF OFF 125 kbps
OFF ON 250 kbps
ON OFF 500 kbps
ON ON Incorrect setting

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OFF When DeviceNet is off, the I/O data in
the buffer area will be cleared.
IN0 ON When DeviceNet is off, the I/O data in
the buffer area will be held.
IN1 Reserved
Note:
zPlease set up the function switch when the power is switched off.After the setup is completed, re-power
RTU-DNET.
zWhen RTU-DNET is operating, changing the setting of the function switch will be invalid.
zUse slotted screwdriver to adjust the DIP switch carefully in case you scratch the switch.
2.7 Extension Port
The extension port is used on connecting RTU-DNET to DVP Slim DI/DO extension units and special modules.
3 Basic Operation
3.1 Connecting RTU-DNET to DVP Slim DI/DO Extension Unit
zOpen the fixing clips on top and bottom of RTU-DNET. Meet the extension port of Slim DI/DO with RTU-DNET.
zPress the fixing clips on top and bottm of Slim DI/DO and check if the connection is fine.
RTU-DNET
DVP-16SP DVP-02DA
RTU-DNET
DVP-16SP DVP-02DA
3.2 Installing RTU-DNET and DVP Slim DI/DO on DIN Rail
zUse 35mm DIN rail.
zOpen the DIN rail clip on RTU-DNET and Slim DI/DO. Insert RTU-DNET and Slim DI/DO onto the DIN rail.
zClip up the DIN rail clips on RTU-DNET and Slim DI/DO to fix them on the DIN rail, as shown below.
RTU-DNET
DVP-16SP DVP-02DA
35mmDIN rail

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3.3 Connecting to DeviceNet Connection Port
zThe colors on the PINs on the DeviceNet connection port match the colors of the connection cables. Make
sure you connect the cable to the right PIN.
zWe recommend you also apply Delta’s power module in the connection.
4 How to Configure RTU-DNET
In this section we will introduce how RTU-DNET as a DeviceNet slave realizes the data exchange between
DeviceNet master and DVP Slim DI/DO extension unit.
zDeviceNet master sends the data to Slim DI/DO.
zRTU-DENT sends the input data from Slim DI/DO to DeviceNet master.
DeviceNet
DVP28SV
DVPDNET-SL
DVPDNET DVP28SV
RUN
STOP
Master
RTU-DNET
DVP-02DA DVP-08ST
DVP-16SP DVP-04AD
DVP-04TC DVP-04PT
4.1 Terms
No. Item Unit Explanation
1 Control word Word For setting up the mode of RTU-DNET, e.g. “H8000” for STOP
mode and “H8001” for RUN mode. See 4.3 for more details.
2 Status word Word Displaying the status of RTU-DNET. See 4.3 for more details.
3 Number of digital
input points Bit The digital input points shall be 8’s multiple. The number will be
regarded as 8 when it is less than 8 and as 16 when it is bigger
than 8 but less than 16.
4 Number of digital
output points Bit The digital output points shall be 8’s multiple. The number will be
regarded as 8 when it is less than 8 and as 16 when it is bigger
than 8 but less than 16.

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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

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Byte position Data written into special module Data read from special module
1 R/R[0]+Service Code[0x10] R/R[0]+Service Code[0x0E]
2 Class ID [0x9C] Class ID [0x9C]
3 Instance ID Instance ID
4 Attribute ID Attribute ID
5 Low byte of Service Data N/A
6 High byte of Service Data N/A
7 N/A N/A
Format of response messages
Byte position Data written into special module Data read from special module
0 Frag[0]+XID+MAC ID Frag[0]+XID+MAC ID
1 R/R[1]+Service Code[0x10] R/R[1]+Service Code[0x0E]
2 Low byte of response data
3 High byte of response data
2. Definitions of DeviceNet Objects for RTU-DNET
Class 0x9A – RTU-DNET setup parameter object
Class attribute
Attribute ID Access rule Name Data type
1 Get Revision UINT
Instance 1
Attribute
ID Access rule Name Range Default Explanation
1 Get
Length of
input I/O data N/A N/A
The sum of the length of the status
word of RTU-DNET and the input data
of the module connected to it. (Unit:
byte)
2 Get Length of
output I/O
data N/A N/A
The sum of the length of the control
word of RTU-DNET and the output
data of the module connected to it.
(Unit: byte)
3 Get Number of
digital input
points (X) 0 ~ 128 N/A
The number will be regarded as 8
when it is less than 8 and as 16 when it
is bigger than 8 but less than 16. (Unit:
bit)
4 Get Number of
digital output
points (Y) 0 ~ 128 N/A
The number will be regarded as 8
when it is less than 8 and as 16 when it
is bigger than 8 but less than 16. (Unit:
bit)
5 Get Number of
special
modules 0 ~ 8 N/A The number of special modules
connected to RTU-DNET.
6 Get Length of
analog input N/A N/A
The length of input data of the special
module connected to RTU-DNET.
(Unit: word)
7 Get Length of
analog output N/A N/A
The length of output data of the special
module connected to RTU-DNET.
(Unit: word)

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Attribute
ID Access rule Name Range Default Explanation
8 Get Status word 0~255 N/A Displaying the status of RTU-DNET.
See 4.3 for more details.
9 Get/Set Control word N/A N/A
For setting up the mode of RTU-DNET,
e.g. “H8000” for STOP mode and
“H8001” for RUN mode. See 4.3 for
more details.
10 Get/Set Diagnostic
interval time 1 ~ 65 secs 5 secs The interval when RTU-DNET executes diagnosis.
11 Get/Set Special
module offline
treatment 0 ~ 2 1
How RTU-DNET will react when the
special module connected to it is
offline.
0: Ignored
1: Alarm
2: Stop DeviceNet IO
12 Get/Set Special
module error
treatment 0 ~ 2 1
How RTU-DNET will react when it
detects errors.
0: Ignored
1: Alarm
2: Stop DeviceNet IO
13 Get/Set RTU-DNET
configuration
validation N/A 0
Validating the configuration of
RTU-DNET when set to “11”.
14 Get/Set Reset
RTU-DNET N/A 0
Resetting RTU-DNET when set to”10”.
After it, the parameter will change to
“0” automatically.
Class 0x9B – Extension module setup parameter object
Class attribute
Attribute ID Access rule Name Data type
1 Get Revision UINT
Instance 1 ~ 8 (parameters for the 1st ~ 8th special modules)
Attribute
ID Access rule Name Range Default Explanation
1 Get Model name N/A N/A Model code for the special module
2 Get
Length of
input data N/A N/A
The sum of the input data length of
special modules connected.
Unit: word
3 Get Length of
output data N/A N/A
The sum of the output data length of
special modules connected.
Unit: word 0 Special module online
b0 1 Special module offline
0 Special module normal
b1 1 Special module in error
4 Get Status 0 ~ 63 N/A
b2 0 Special module and
configuration consistent

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Attribute
ID Access rule Name Range Default Explanation
1Special module and
configuration
inconsistent
0 Configuration data valid
b3 1Configuration data
invalid
0Special module
identifiable
b4 1Special module
unidentifiable
b5~b15 Reserved
5 Get/Set Work mode 0 ~ 1 0 Work mode of special module
0: auto 1: custom
6 Get/Set Number of
input data 0 ~ 8 N/A Number of input data of special
modules connected
7 Get/Set Number of
output data 0 ~ 8 N/A Number of output data of special module connected
8 Reserved
9 Get Error code N/A Error code in special module
10 ~ 19 Reserved
20 Get/Set Start CR for module 1
input data N/A N/A
Start CR for the input data of special
module 1
21 Get/Set Input data
length for
module 1 N/A N/A
Length of input data of special module
1
22 Get/Set Start CR for
module 2
input data N/A N/A
Start CR for the input data of special
module 2
23 Get/Set Input data
length for
module 2 N/A N/A Length of input data of special module
2
24 Get/Set Start CR for module 3
inptu data N/A N/A Start CR for the input data of special
module 3
25 Get/Set Input data
length for
module 3 N/A N/A Length of input data of special module
3
26 Get/Set Start CR for
module 4
input data N/A N/A Start CR for the input data of special
module 4
27 Get/Set Input data length for
module 4 N/A N/A Length of input data of special module
4
28 Get/Set Start CR for
module 5
input data N/A N/A Start CR for the input data of special
module 5
29 Get/Set Input data
length for
module 5 N/A N/A Length of input data of special module
5

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Attribute
ID Access rule Name Range Default Explanation
30 Get/Set Start CR for
module 6
input data N/A N/A Start CR for the input data of special
module 6
31 Get/Set Input data
length for
module 6 N/A N/A Length of input data of special module
6
32 Get/Set Start CR for
module 7
input data N/A N/A Start CR for the input data of special
module 7
33 Get/Set Input data
length for
module 7 N/A N/A Length of input data of special module
7
34 Get/Set Start CR for
module 8
input data N/A N/A Start CR for the input data of special
module 8
35 Get/Set Input data
length for
module 8 N/A N/A Length of input data of special module
8
36 ~ 49 Reserved
50 Get/Set Start CR for
module 1
output data N/A N/A Start CR for the output data of special
module 1
51 Get/Set Output data
length for
module 1 N/A N/A Length of output data of special
module 1
52 Get/Set Start CR for
module 2
output data N/A N/A Start CR for the output data of special
module 2
53 Get/Set Output data
length for
module 2 N/A N/A Length of output data of special
module 2
54 Get/Set Start CR for
module 3
output data N/A N/A Start CR for the output data of special
module 3
55 Get/Set Output data
length for
module 3 N/A N/A Length of output data of special
module 3
56 Get/Set Start CR for
module 4
output data N/A N/A Start CR for the output data of special
module 4
57 Get/Set Output data
length for
module 4 N/A N/A Length of output data of special
module 4
58 Get/Set Start CR for
module 5
output data N/A N/A Start CR for the output data of special
module 5
59 Get/Set Output data
length for
module 5 N/A N/A Length of output data of special
module 5
60 Get/Set Start CR for
module 6
output data N/A N/A Start CR for the output data of special
module 6

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Attribute
ID Access rule Name Range Default Explanation
61 Get/Set Output data
length for
module 6 N/A N/A Length of output data of special
module 6
62 Get/Set Start CR for module 7
output data N/A N/A Start CR for the output data of special
module 7
63 Get/Set Output data
length for
module 7 N/A N/A Length of output data of special
module 7
64 Get/Set Start CR for
module 8
output data N/A N/A Start CR for the output data of special
module 8
65 Get/Set Output data
length for
module 8 N/A N/A Length of output data of special
module 8
Class 0x9C – Extension module parameter object
Class attribute
Attribute ID Access rule Name Data type
1 Get Revision UINT
2 Get MaxInstance UINT
Instance 1 ~ 8 (CR for the 1st ~ 8th special module)
Attribute ID Access rule Name Data type
1 Get Content in CR#0 UINT
2 Get/Set Content in CR#1 UINT
3 Get/Set Content in CR#2 UINT
… … … UINT
9 Get/Set Content in CR#8 UINT
10 Get/Set Content in CR#9 UINT
… … … UINT
Note:
zWhen you modify the content in CR of the special module through DeviceNet, please read out the
content again (Get_Attribute_Single) after the modification and confirm that it has been modified
successfully.
zThe content in some CRs of the special module cannot be modified. Therefore, please pay attention
to these parameters when you are modifying them.
4.3 DeviceNet I/O Mapping Data
1. Control word and status word in RTU-DNET
Control word
bit Status value Explanation
0 Setting RTU-DNET to STOP mode
0 1 Setting RTU-DNET to RUN mode
1 0/1 Reserved

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bit Status value Explanation
2 0/1 Reserved
3 0/1 Reserved
4 0/1 Reserved
5 0/1 Reserved
6 0/1 Reserved
7 0/1 Reserved
8 0/1 Reserved
9 0/1 Reserved
10 0/1 Reserved
11 0/1 Reserved
12 0/1 Reserved
13 0/1 Reserved
14 0/1 Reserved
0 Disabling control word
15 1 Enabling control word
Status word
bit Status value Explanation
0 RTU-DNET detects DI/DO extension unit.
0 1 RTU-DNET does not detect DI/DO extension unit.
0 The configurations of RTU-DNET and the extension unit connected to
it are consistent.
1 1 The configrations of RTU-DNET and the extension unit connected to it
are inconsistent.
0 No error occurs in the special module.
2 1 Error occurs in the special module.
0 The special module operates normally.
3 1 The special module is detected offline.
0 The configuration data are valid.
4 1 The configuration data are invalid.
0 RTU-DNET operates normally.
5 1 The power of RTU-DNET is in low voltage.
0 RTU-DNET operates normally.
6 1 RTU-DNET detects unidentifiable special module.
0 RTU-DNET operates normally.
7 1 More than 8 special modules connected to RTU-DNET, or the number
of digital I/O points exceeds 128.
8 0/1 Reserved
9 0/1 Reserved
10 0/1 Reserved
11 0/1 Reserved
12 0/1 Reserved
13 0/1 Reserved

DeviceNet Remote I/O Communication Module RTU-DNET
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bit Status value Explanation
14 0/1 Reserved
15 0/1 Reserved
2. I/O data mapping
If the I/O data do not include control word and status word of RTU-DNET, the I/O data mapping of
DeviceNet master and RTU-DNET will be:
zDeviceNet master →RTU-DNET
Master
(byte) RTU-DNET
0 Low byte of the 1st special module output channel 1
1 High byte of the 1st special module output channel 1
2 Low byte of the 1st special module output channel 2
3 High byte of the 1st special module output channel 2
…
Special module
…
N Y0 ~ Y7 on the 1st Slim DI/DO
N+1 Y0 ~ Y7 of the 2nd Slim DI/DO
…
Slim DI/DO
…
zRTU-DNET →DeviceNet master
Master
(byte) RTU-DNET
0 Low byte of the 1st special module input channel 1
1 High byte of the 1st special module input channel 1
2 Low byte of the 1st special module input channel 2
3 High byte of the 1st special module input channel 2
…
Special module
…
N X0 ~ X7 on the 1st Slim DI/DO
N+1 X0 ~ X7 on the 2nd Slim DI/DO
…
Slim DI/DO
…
If the I/O data include control word and status word of RTU-DNET, the I/O data mapping of DeviceNet
master and RTU-DNET will be:
zDeviceNet master →RTU-DNET
Master
(byte) RTU-DNET
0 Low byte of control word of RTU-DNET
1 RTU-DNET High byte of control word of RTU-DNET
2 Low byte of the 1st special module output channel 1
3 High byte of the 1st special module output channel 1
4 Low byte of the 1st special module output channel 2
5 High byte of the 1st special module output channel 2
…
Special module
…
N Y0 ~ Y7 of the 1st Slim DI/DO
N+1 Slim DI/DO Y0 ~ Y7 of the 2nd Slim DI/DO

DeviceNet Remote I/O Communication Module RTU-DNET
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Master
(byte) RTU-DNET
… …
zRTU-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 1st special module output channel 1
3 High byte of the 1st special module output channel 1
4 Low byte of the 1st special module output channel 2
5 High byte of the 1st special module output channel 2
…
Special module
…
N X0 ~ X7 of the 1st Slim DI/DO
N+1 X0 ~ X7 of the 2nd Slim DI/DO
…
Slim DI/DO
…
Note:
zIf 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.
zIn 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:
RTU-DNET
DVP-02DA DVP-08ST
DVP-16SP
DVP-04AD
DVP-04TC
DVP-04PT
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:

DeviceNet Remote I/O Communication Module RTU-DNET
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Item Content Software screen
DIDO Input Points
(X) 16 bits
DIDO Output Points
(Y) 8 bits
AIAO Module
Number 4
Input IO
Data Length 26 bytes
Output IO
Data Length 5 bytes
If the I/O data include control word and status word of RTU-DNET, the information of the extension module
connected to RTU-DNET are as follows:
Item Content Software screen
DIDO Input Points
(X) 16 bits
DIDO Output Points
(Y) 8 bits
AIAO Module
Number 4
Input IO
Data Length 28 bytes
Output IO
Data Length 7 bytes
2. How to change the I/O mapping relation between RTU-DNET and special module
RTU-DNET
DVP-02DA DVP-08ST
DVP-16SP
DVP-04AD
DVP-04TC
DVP-04PT
As the figure above, if you need to read the average Celsius degree temperature at CH1 ~ CH4 on
DVP-04PT, follow the steps below:
(1) Scan DeviceNet by using DeviceNetBuilder software. After the scan is completed, the nodes on
DeviceNet will be displayed on the screen.