RS-485 User's Manual MEH448d - Fuji Electric America

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� Safety Precautions Prior to installation, connection (wiring), operation, maintenance or inspection, read through this user's manual as well as the instruction and installation manuals to ensure proper operation of the product. Familiarize yourself with all information required for proper use, including knowledge relating to the product, safety information, and precautions. This user's manual classifies safety precautions as shown below according to the severity of the accident that may occur if you fail to observe the precaution: Failure to heed the information indicated by this symbol may lead to dangerous conditions, possibly resulting in death or serious bodily injuries. Failure to heed the information indicated by this symbol may lead to dangerous conditions, possibly resulting in minor or light bodily injuries and/or substantial property damage. Failure to heed the information contained under the CAUTION title can also result in serious consequences. These safety precautions are of utmost importance and must be observed at all times. The FRENIC-Mini/Eco is not designed for use in appliances and machinery on which lives depend. Consult Fuji before considering the FRENIC-Mini/Eco series of inverters for equipment and machinery related to nuclear power control, aerospace uses, medical uses or transportation. When the product is to be used with any machinery or equipment on which lives depend or with machinery or equipment which could cause serious loss or damage should this product malfunction or fail, ensure that appropriate safety devices and/or equipment are installed. Wiring - Before starting wiring, confirm that the power is turned OFF (open). An electric shock may result. - The product cannot be connected directly to an RS-232C interface of a personal computer. - Before connecting wiring to the RJ-45 connector (modular jack) for connecting the keypad, equipped on the inverter (FRENIC-Eco) or the RJ-45 connector (modular jack) on the RS-485 communications card (option) (FRENIC-Mini), confirm the wiring of the device to be connected. For further information, see "2.2 Connections" under Chapter 2 of this manual. Failure may result. Operation - Note that the inverter starts to supply power to the motor and the motor runs upon resetting of an alarm with the operation command ON (closed). An accident may result. iii
CHAPTER 1 OVERVIEW1 Table of Contents 1.1 Features ................................................................................................................................ 1-1 1.2 List of Functions .................................................................................................................... 1-2 CHAPTER 2 COMMON SPECIFICATIONS1 2.1 Specifications of RS-485 Communications ........................................................................... 2-1 2.1.1 Specification of the RJ-45 connector for RS-485 communications (modular jack) ....... 2-3 2.1.2 Specification of the terminal for RS-485 communications............................................. 2-4 2.1.3 RJ-45 connector (modular jack) for function expansion ................................................ 2-5 2.1.4 Specification of connection cable for RS-485 terminal .................................................. 2-7 2.2 Connections .......................................................................................................................... 2-8 2.2.1 Basic connection............................................................................................................ 2-8 2.2.2 Connection procedures................................................................................................ 2-11 2.2.3 Devices for connection ................................................................................................ 2-15 2.2.4 Measures against noise............................................................................................... 2-16 2.3 Switching to Communications ............................................................................................. 2-18 2.3.1 Functions for the switching .......................................................................................... 2-18 2.3.2 Link functions (operation selection) ............................................................................. 2-19 2.3.3 How to switch communications enabled/disabled ....................................................... 2-20 2.3.4 Link functions for supporting data input (operation select).......................................... 2-21 2.4 Making RS-485-related Settings ......................................................................................... 2-22 2.4.1 Link function (RS-485 setting) ..................................................................................... 2-22 2.5 Selecting the Method of Storing Communications Data...................................................... 2-25 CHAPTER 3 Modbus RTU PROTOCOL1 3.1 Messages .............................................................................................................................. 3-1 3.1.1 Message formats ........................................................................................................... 3-1 3.1.2 Message types............................................................................................................... 3-1 3.1.3 Message frames ............................................................................................................ 3-2 3.1.4 Message categories....................................................................................................... 3-4 3.1.5 Communications examples.......................................................................................... 3-11 3.2 Host Side Procedures ......................................................................................................... 3-12 3.2.1 Inverter's response time .............................................................................................. 3-12 3.2.2 Timeout processing...................................................................................................... 3-13 3.2.3 Receiving preparation complete time and message timing from the host................... 3-14 3.2.4 Frame synchronization method ................................................................................... 3-14 3.3 Communications Errors....................................................................................................... 3-15 3.3.1 Categories of communications errors.......................................................................... 3-15 3.3.2 Operations in case of errors ........................................................................................ 3-16 3.4 CRC-16................................................................................................................................ 3-19 3.4.1 Overview of the CRC-16.............................................................................................. 3-19 3.4.2 Algorithm...................................................................................................................... 3-19 3.4.3 Calculation example .................................................................................................... 3-21 3.4.4 Frame length calculation.............................................................................................. 3-22 iv
Page 1 and 2: MEH448d
Page 3 and 4: Copyright © 2002-2009 Fuji Electri
Page 5: FRENIC-Multi Name Document number D
Page 9 and 10: CHAPTER 7 Metasys N2 (N2 PROTOCOL)1
Page 12 and 13: 1.1 Features The functions listed b
Page 14 and 15: CHAPTER 2 COMMON SPECIFICATIONS Thi
Page 16 and 17: 2.1 Specifications of RS-485 Commun
Page 18 and 19: 2.1.1 Specification of the RJ-45 co
Page 20 and 21: 2-5 2.1 Specifications 2.1.3 RJ-45
Page 22 and 23: 2.1.4 Specification of connection c
Page 24 and 25: 2-9 2.2 Connections (2) Connection
Page 26 and 27: 2-11 2.2 Connections (4) Multidrop
Page 28 and 29: (a ) RS-485 communications card (fo
Page 30 and 31: 2.2.3 Devices for connection 2-15 2
Page 32 and 33: Separating the grounding 2-17 2.2 C
Page 34 and 35: 2.3.2 Link functions (operation sel
Page 36 and 37: 2-21 2.3 Switching to Communication
Page 38 and 39: Baud rate (y04, y14) Set a baud rat
Page 40 and 41: 2.5 Selecting the Method of Storing
Page 42: CHAPTER 3 Modbus RTU PROTOCOL This
Page 45 and 46: 3.1.3 Message frames As shown below
Page 47 and 48: 3.1.4 Message categories There are
Page 49 and 50: How to set a query - When the stati
Page 51 and 52: Interpretation of normal response -
Page 53 and 54: Interpretation of normal response -
Page 55 and 56: 3.2 Host Side Procedures 3.2.1 Inve
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3.2.3 Receiving preparation complet
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3.3.2 Operations in case of errors
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When y02 = 3 (mode in which the inv
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START Initial setting Remainder R
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Table 3.13 CRC data calculation tab
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4.1 Messages 4.1.1 Message formats
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Byte Field ASCII format Value Table
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Table 4.3 ACK frame 4-5 4.1 Message
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[2] Optional frame This section des
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Byte Polling response frame [invert
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4.1.3 Descriptions of fields [1] Co
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4.1.4 Communications examples 4-13
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4.2 Host Side Procedures 4.2.1 Inve
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4.3 Communications Errors 4.3.1 Cat
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CHAPTER 5 FUNCTION CODES AND DATA F
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5.1.2 Command data [1] List of comm
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[3] Operation command data Table 5.
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Table 5.5 Relation between operatio
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[5] Universal DO and universal AO (
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Table 5.9 Monitor data 1 function c
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Table 5.11 Monitor data 1 function
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Table 5.13 Monitor data 1 function
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Table 5.14 Keypad-related function
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*1 Operation command source code In
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5.2 Data Formats 5.2.1 List of data
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Table 5.18 List of data format numb
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Code Table 5.19 List of data format
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Data format [7] Decimal data (posit
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Data format [11] Capacity code (uni
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Data format [17] Model code 15 14 1
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Data format [23] Polarity + decimal
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Data format [40] Alarm factor 15 14
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Data format [68] Frequency command
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===Appendix=== CHAPTER 6 FLOOR LEVE
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6.1 Messages 6.1.1 polling/selectin
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6.5 Strategies 6.5.1 Monitoring 6-3
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6.6.5 Analog Inputs monitor 6-5 6.6
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Point Number Point Type Table 6.3 P
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Table 6.4 Point Database for FLN. P
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It is similar for the lower limit v
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7.1 Messages 7.1.1 Transmission Spe
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7.4 Read / Write Parameter Read Par
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Support Command List 2 Message Comm
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Support Command List 4 Message Comm
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Fuji Electric Systems Co., Ltd. Sta
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RS-485 User's Manual MEH448d - Fuji Electric America

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