Communication Function - Omron SYSDRIVE MX2 SERIES User Manual

Communication Function
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
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
6