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
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INTRODUCTION................................................................................................................................... |
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1.1 |
Features ...................................................................................................................................... |
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1.2 |
Specifications .............................................................................................................................. |
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PRODUCT PROFILE & OUTLINE ....................................................................................................... |
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2.1 |
Dimension ................................................................................................................................... |
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2.2 |
Product Profiles........................................................................................................................... |
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2.3 |
RUN/STOP Switch ...................................................................................................................... |
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2.4 |
Address Switch ........................................................................................................................... |
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2.5 |
Communication Mode Switch...................................................................................................... |
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BASIC OPERATION............................................................................................................................. |
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3.1 |
Connecting RTU-485 to DVP Slim DI/DO Extension Unit ........................................................... |
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3.2 |
Installing RTU-485 and DVP Slim DI/DO on DIN Rail ................................................................. |
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AREAS FOR SPECIAL FUNCTIONS .................................................................................................. |
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4.1 |
Areas in Slim DI/DO Extension Unit............................................................................................ |
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4.2 |
Areas in Special Module.............................................................................................................. |
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4.3 |
Special Functions ........................................................................................................................ |
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4.4 |
Error Codes................................................................................................................................. |
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FUNCTION CODES RTU-485 SUPPORTS ......................................................................................... |
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APPLICATION OF RTU-485 ................................................................................................................ |
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6.1 |
Connection between RTU-485 and Master Device ..................................................................... |
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6.2 |
Application Example.................................................................................................................... |
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DVP-PLC Application Manual |
1 |
Modbus Remote I/O Communication Module RTU-485
7 LED INDICATOR & TROUBLE-SHOOTING ..................................................................................... |
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7.1 |
POWER LED ............................................................................................................................. |
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7.2 |
RUN LED................................................................................................................................... |
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7.3 |
ALARM LED .............................................................................................................................. |
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7.4 |
RS-485 LED ............................................................................................................................. |
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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 |
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Electrical isolation |
500 VDC |
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Interface |
Removable connector (3Pin) |
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Transmission cable |
2-wire twister shielded cablew8 |
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Communication |
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7, E, 1 |
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7, O, 2 |
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8, O, 1 |
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ASCII |
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Mode |
7, O, 1 |
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7, N, 2 |
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8, N, 1 |
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7, E, 2 |
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8, E, 1 |
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8, N, 2 |
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RTU |
8, E, 1 |
8, O, 1 |
8, N, 1 |
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8, N, 2 |
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Baud rates |
1,200bps; 2,400bps; 4,800bps; 9,600bps; 19,200bps; 38,400bps; |
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57,600bps; 115,200bps |
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Electrical specification |
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Power supply |
24 VDC (-15% ~ 20%) (with DC input polarity reverse protection) |
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Environment |
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ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge 4KV Contact |
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Discharge |
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EFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2KV, Digital I/O: 1KV |
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Noise immunity |
Analog & Communication I/O: 1KV |
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Damped-Oscillatory Wave: Power Line: 1KV, Digital I/O: 1KV |
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RS (IEC 61131-2, IEC 61000-4-3): 80MHz~1000MHz , 1.4GHz~2.0GHz , |
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10V/m |
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Operation |
0ºC ~ 55ºC (temperature); 50 ~ 95% (humidity); pollution degree 2 |
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Storage |
-25ºC ~ 70ºC (temperature); 5 ~ 95% (humidity) |
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Vibration/shock |
Standard: IEC 61131-2 IEC 68-2-6 (TEST Fc)/IEC 61131-2 & IEC 68-2-27 |
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resistance |
(TEST Ea) |
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Certificates |
IEC 61131-2, UL508 |
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DVP-PLC Application Manual |
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