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

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CHAPTER 2 COMMON SPECIFICATIONS This chapter describes the specifications common to the Modbus RTU protocol, Fuji general-purpose inverter protocol, and loader protocol. For further information about the specific specifications of each protocol, see Chapter 3 "Modbus RTU Protocol" and Chapter 4 "Fuji General-purpose Inverter Protocol." Table of Contents 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
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Page 1 and 2: MEH448d
Page 3 and 4: Copyright © 2002-2009 Fuji Electri
Page 5 and 6: FRENIC-Multi Name Document number D
Page 7 and 8: CHAPTER 1 OVERVIEW1 Table of Conten
Page 9 and 10: CHAPTER 7 Metasys N2 (N2 PROTOCOL)1
Page 12 and 13: 1.1 Features The functions listed b
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
Page 57 and 58: 3.2.3 Receiving preparation complet
Page 59 and 60: 3.3.2 Operations in case of errors
Page 61 and 62: When y02 = 3 (mode in which the inv
Page 63 and 64: 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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