Delta Electronics RTU-DNET User Manual

DVP-PLC Application Manual 

3

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 

z  Supports Group 2 only servers. 

z  Supports explicit connection via predefined Master/Slave connection set. 

z Supports 

polling 

z  Supports EDS file configuration in DeviceNet network configuration tools. 

z  Max. 256 digital I/O points extendable. 

z  Max. 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. 

Auto 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, The ALARM 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