7-9-7 Permission of RUN Command ................................................................................................7-117
7-9-8 Frequency Calculation Function..............................................................................................7-1
18
7-9-9 Frequency Addition Function ..................................................................................................7-118
7-9-10 UP/DOWN control ...................................................................................................................7-119
7-9-11 AVR (Automatic Voltage Regulator) Function .........................................................................7-121
7-9-12 Overexcitation Control during Deceleration ............................................................................7-122
7-9-13 PID Function ...........................................................................................................................7-123
7-9-14 Automatic Energy-saving Operation Function.........................................................................7-141
7-9-15 Commercial Switching (CS) ....................................................................................................7-141
7-9-16 Output current fluctuation damping .........................................................................................7-144
7-9-17 Pulse Train Frequency Input ...................................................................................................7-145
7-9-18 LAD Cancel Function ..............................................................................................................7-148
7-9-19 Servo Lock Function ...............................................................................................................7-148
7-9-20 Droop Control..........................................................................................................................7-149
7-9-21 Magnetic Flux Level at Light Load ..........................................................................................7-150
7-9-22 Pre-excitation ..........................................................................................................................7-151
7-9-23 Forced Stop.............................................................................................................................7-152
7-9-24 Overload Stop Function ..........................................................................................................7-153
7-9-25 Battery Operation Enable Command (BATRY) .......................................................................7-155
7-9-26 Universal Terminal...................................................................................................................7-155
7-9-27 Protection/Maintenance Mode Selection Function..................................................................7-157
Section 8 Communications Functions
8-1 Communications Specifications ..........................................................................................8-3
8-2 RS-485 Terminal Arrangement and Connection
.................................................................8-4
8-3 Modbus Communication Parameters ..................................................................................8-5
8-4 Modbus Communication Protocol .......................................................................................8-7
8-4-1 Message Configuration ...............................................................................................................8-7
8-4-2 Required Communications Time .................................................................................................8-9
8-4-3 Normal Response .......................................................................................................................8-9
8-4-4 Abnormal Response....................................................................................................................8-9
8-4-5 No Response ............................................................................................................................8-10
8-5 Explanation of Each Function Code .................................................................................. 8-11
8-5-1 Read Coil Status [01 hex] .........................................................................................................8-11
8-5-2 Read from Holding Register [03 hex] ........................................................................................8-12
8-5-3 Write to Coil [05 hex].................................................................................................................8-13
8-5-4 Write to Holding Register [06 hex].............................................................................................8-14
8-5-5 Loop-back Test [08 hex] ............................................................................................................8-15
8-5-6 Write to Multiple Coils [0F hex]..................................................................................................8-16
8-5-7 Write to Multiple Holding Registers [10 hex] .............................................................................8-18
8-5-8 Read/Write from/to Multiple Holding Registers [17 hex]............................................................8-19
8-5-9 Exception Response .................................................................................................................8-20
8-6 Saving a Change to Holding Register (Enter Command).................................................8-21
8-6-1 How to Issue Enter Command ..................................................................................................8-21
8-6-2 EEPROM Write Mode ...............................................................................................................8-22
8-7 Modbus Mapping Function .................................................................................................8-23
8-7-1 Operation of Modbus Mapping Function ...................................................................................8-23
8-7-2 Modbus Mapping Function Settings..........................................................................................8-23
8-7-3 Writing to Double-word Data .....................................................................................................8-25
8-7-4 Troubleshooting for Modbus Mapping Function ........................................................................8-25
8-7-5 Endian Function ........................................................................................................................8-25
8-8 Co-inverter Communication................................................................................................8-27
8-8-1 Co-inverter Communication Parameters...................................................................................8-28
8-8-2 Co-inverter Communication Settings ........................................................................................8-31
8-9 Modbus Communication Data Lists...................................................................................8-34
8-9-1 Coil Number List........................................................................................................................8-34
8-9-2 Register List ..............................................................................................................................8-36
CONTENTS
11
M1 Series Standard Type User's Manual (I669)
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