Delta RTU-485 User Manual

RTU-485

Modbus Remote I/O Communication Module

Application Manual

Modbus Remote I/O Communication Module RTU-485

Warning

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.

Switch off the power before wiring.

RTU-485 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.

RTU-485 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-485 can install, operate, wire and maintain it.

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



1 INTRODUCTION...................................................................................................................................3

2 PRODUCT PROFILE & OUTLINE .......................................................................................................4

3 BASIC OPERATI ON.............................................................................................................................6

Table of Contents

1.1 Features......................................................................................................................................3

1.2 Specifications..............................................................................................................................3

2.1 Dimension ...................................................................................................................................4

2.2 Product Profiles...........................................................................................................................4

2.3 RUN/STOP Switch......................................................................................................................4

2.4 Address Switch ...........................................................................................................................5

2.5 Communication Mode Switch......................................................................................................5

3.1 Connecting RTU-485 to DVP Slim DI/DO Extension Unit...........................................................6

is correctly grounded in order to prevent electromagnetic interference.

3.2 Installing RTU-485 and DVP Slim DI/DO on DIN Rail.................................................................6

4 AREAS FOR SPECIAL FUNCTIONS ..................................................................................................6

4.1 Areas in Slim DI/DO Extension Unit............................................................................................6

4.2 Areas in Special Module..............................................................................................................7

4.3 Special Functions........................................................................................................................7

4.4 Error Codes.................................................................................................................................8

5 FUNCTION CODES RTU-485 SUPPORTS .........................................................................................8

6 APPLICATI ON OF RTU-485 ................................................................................................................9

6.1 Connection between RTU-485 and Master Device.....................................................................9

6.2 Application Example....................................................................................................................9

DVP-PLC Application Manual

Modbus Remote I/O Communication Module RTU-485

7 LED INDICATOR & TROUBLE-SHOOTING ..................................................................................... 11

7.1 POWER LED.............................................................................................................................11

7.2 RUN LED...................................................................................................................................11

7.3 ALARM LED..............................................................................................................................11

7.4 RS-485 LED ............................................................................................................................. 12

DVP-PLC Application Manual

Modbus Remote I/O Communication Module RTU-485

1 Introduction

1. To ensure correct installation and operation of RTU-485, please read this chapter carefully before using your RTU-485

2. RTU-485 is a Modbus remote I/O communication module for Delta’s PLC to remote-control DVP Slim series DI/DO and AI/AO extension module s.

3. RTU-485 is a standard Modbu s slave device and is compatible with pther master devices which comply with Modbus protocol.

1.1 Features y

Auto-detecting extension modules

y Maximum extension: 8 special modules; 128 input points and 128 output points

1.2 Specifications

 DeviceNet connection

Transmission method RS-485 Electrical isolation 500 VDC Interface Removable connector (3Pin) Transmission cable 2-wire twister shielded cablew8

 Communication

7, E, 1 7, O, 2 8, O, 1

Mode

Baud rates

 Electrical specification

Power supply 24 VDC (-15% ~ 20%) (with DC input polarity reverse protection)

 Environment

Noise immunity

Operation 0ºC ~ 55ºC (temperature); 50 ~ 95% (humidity); pollution degree 2

ASCII

RTU 8, E, 1 8, O, 1 8, N, 1 8, N, 2 1,200bps; 2,400bps; 4,800bps; 9,600bps; 19,200bps; 38,400bps;

57,600bps; 115,200bps

ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge，4KV Contact Discharge EFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2KV, Digital I/O: 1KV Analog & Communication I/O: 1KV Damped-Oscillatory Wav e: Power Line: 1KV, Digital I/O: 1KV RS (IEC 61131-2, IEC 61000-4-3): 80MHz~1000MHz , 1.4GHz~2.0GHz ,

10V/m

7, O, 1 7, N, 2 8, N, 1 7, E, 2 8, E, 1 8, N, 2

Storage -25ºC ~ 70ºC (temperature); 5 ~ 95% (humidity)

Vibration/shock resistance

Certificates IEC 61131-2, UL508

DVP-PLC Application Manual

Standard: IEC 61131-2、IEC 68-2-6 (TEST Fc)/IEC 61131-2 & IEC 68-2-27 (TEST Ea)

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