Delta Electronics RTU-DNET - Manual (Page 5)

DeviceNet Remote I/O Communication Module RTU-DNET
DVP-PLC Application Manual 3
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
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