Omron MX2 Series User Manual page 30

CONTENTS
7-8-10 RUN Time/Power ON Time Over (RNT/ONT) ........................................................................... 7-84
7-8-11 Logic Operation Output Signal (LOG1 to LOG3) ...................................................................... 7-85
7-8-12 Capacitor Life Warning Signal (WAC) ...................................................................................... 7-86
7-8-13 Cooling Fan Operation ............................................................................................................. 7-86
7-8-14 Cooling Fan Life Warning Signal (WAF) ................................................................................... 7-87
7-8-15 Communication Disconnection Detection Signal (NDc) ............................................................ 7-87
7-8-16 Starting Contact Signal (FR) .................................................................................................... 7-88
7-8-17 Cooling Fin Overheat Warning (OHF) ...................................................................................... 7-88
7-8-18 Low Current Signal (LOC) ........................................................................................................ 7-89
7-8-19 Fatal Fault Signal (MJA). .......................................................................................................... 7-89
7-8-20 Window Comparator (WCO/WCOI) (Disconnection Detection ODc/OIDc) ............................... 7-90
7-8-21 Frequency Reference Selection Status Signal (FREF) ............................................................. 7-91
7-8-22 RUN Command Status Signal (REF) ....................................................................................... 7-91
7-8-23 2nd Control Selection Signal (SETM) ....................................................................................... 7-92
7-8-24 Ground Fault Detection Selection............................................................................................. 7-92
7-9 DC Injection Braking Function ............................................................................................. 7-93
7-9-1 DC Injection Braking (DB) ........................................................................................................ 7-93
7-10 Safety Function ...................................................................................................................... 7-99
7-10-1 Overview of Safety Function ..................................................................................................... 7-99
7-10-2 Safety Function Settings ........................................................................................................ 7-102
7-10-3 Wiring and Usage of the Safety Function. ...............................................................................7-103
7-10-4 Periodic Inspection ................................................................................................................. 7-104
7-11 Option/Applied Functions (Group P) ................................................................................. 7-105
7-11-1 Operation Selection on Option Error .......................................................................................7-105
7-11-2 DriveProgramming Function Parameters ................................................................................ 7-105
Section 8 Communications Functions
8-1 Communications Specifications ........................................................................................... 8-3
8-2 RS485 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 [17h] ................................................................ 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
8-7 Modbus Mapping Function .................................................................................................. 8-24
8-7-1 Operation of Modbus Mapping Function ................................................................................... 8-24
8-7-2 Modbus Mapping Function Settings ......................................................................................... 8-25
8-7-3 Compressed Single-word Registers. ........................................................................................ 8-26
8-7-4 Troubleshooting for Modbus Mapping Function ........................................................................ 8-28
8-7-5
8-8 Co-inverter Communication ................................................................................................. 8-31
28
EEPROM Write Mode ............................................................................................................. 8-23
Endian Function ........................................................................................................................ 8-29
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)