Delta RTU-485 User Manual

4.3 (3)
Delta RTU-485 User Manual

RTU-485

Modbus Remote I/O Communication Module

Application Manual

Modbus Remote I/O Communication Module RTU-485

Warning

3Please 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.

3Switch off the power before wiring.

3RTU-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.

3RTU-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.

3DO 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

1

INTRODUCTION...................................................................................................................................

3

 

1.1

Features ......................................................................................................................................

3

 

1.2

Specifications ..............................................................................................................................

3

2

PRODUCT PROFILE & OUTLINE .......................................................................................................

4

 

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

BASIC OPERATION.............................................................................................................................

6

 

3.1

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

6

 

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

APPLICATION OF RTU-485 ................................................................................................................

9

 

6.1

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

9

 

6.2

Application Example....................................................................................................................

9

DVP-PLC Application Manual

1

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

2

DVP-PLC Application Manual

Modbus Remote I/O Communication Module RTU-485

1Introduction

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 modules.

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

1.1Features

y Auto-detecting extension modules

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

1.2Specifications

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

 

ASCII

 

 

 

 

 

 

Mode

7, O, 1

 

7, N, 2

 

8, N, 1

 

 

 

 

 

 

 

 

7, E, 2

 

8, E, 1

 

8, N, 2

 

 

 

 

 

 

 

 

 

 

 

 

 

RTU

8, E, 1

8, O, 1

8, N, 1

 

8, N, 2

Baud rates

1,200bps; 2,400bps; 4,800bps; 9,600bps; 19,200bps; 38,400bps;

57,600bps; 115,200bps

 

 

 

 

 

 

 

 

 

 

 

Electrical specification

 

 

 

 

 

 

 

 

 

Power supply

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

Environment

 

 

 

 

 

 

 

 

 

 

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

Noise immunity

Analog & Communication I/O: 1KV

 

 

 

 

Damped-Oscillatory Wave: Power Line: 1KV, Digital I/O: 1KV

 

RS (IEC 61131-2, IEC 61000-4-3): 80MHz~1000MHz , 1.4GHz~2.0GHz ,

 

10V/m

 

 

 

 

 

 

Operation

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

Storage

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

 

 

Vibration/shock

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

resistance

(TEST Ea)

 

 

 

 

 

 

Certificates

IEC 61131-2, UL508

 

 

 

 

 

 

 

 

 

 

 

 

 

DVP-PLC Application Manual

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