Omron 3G3MX2 User Manual

SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
6
Communication Function
Describes the connection and setting methods for implementing Modbus
communication with external network control equipment, as well as each function
required in this communication. The method of Co-inverter communication is also
described.
6-1 Communication Specifications ........................................... 6-1
6-2 RS-485 Port Specifications and Connection...................... 6-2
6-3 List of Modbus Communication (Modbus-RTU) Parameters....... 6-3
6-4 Modbus Communication (Modbus-RTU) Protocol............. 6-4
Message Structure.......................................................................... 6-4
Total Communication Time ............................................................. 6-6
Normal Response ........................................................................... 6-6
Abnormal Response ....................................................................... 6-7
No Response .................................................................................. 6-7
6-5 Explanation of Each Parameter No. .................................... 6-8
Coil Status Read [01h] .................................................................... 6-8
Reading the Holding Register Content [03h] .................................. 6-9
Writing Into the Coil [05h].............................................................. 6-10
Writing Into the Holding Register [06h] ......................................... 6-12
Loop-back Test [08h] .................................................................... 6-13
Writing Into Multiple Coils [0Fh] .................................................... 6-14
Writing Into Multiple Holding Register [10h].................................. 6-16
Multiple Holding Register Read or Write [17h].............................. 6-17
Exceptional Response .................................................................. 6-18
6-6 To Save the Change to the Holding Register (Enter Command) ......6-19
Issuing Method for the Enter Command ....................................... 6-19
EEPROM Write Mode ................................................................... 6-20
6-7 Co-Inverter Communication............................................... 6-22
Co-inverter Communication Setting .............................................. 6-25
6-8 List of Modbus Communication (Modbus-RTU) Data...... 6-27

Omron 3G3MX2 Specifications

General

Model/Series	3G3MX2
Category/Type	Inverter
Input Frequency	50/60 Hz
Capacity/Power Range	0.1 kW to 15 kW
Output Frequency Range	0.1 to 400 Hz
Overload Capacity	150% for 60 seconds
Cooling Method	Fan cooling
Control Method	V/f Control, Sensorless Vector Control
Protection Functions/Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Communication Options	Modbus RS-485
Braking Unit	Built-in (for certain models), Optional external unit
Voltage Class/Input Voltage	Single-phase 200 V, Three-phase 200 V, Three-phase 400 V