Omron MX2 Series User Manual

8 Communications Functions
8 - 15
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
⚫ Response
No.
Field name
Example
[hex]
1
Slave address
*1
01
2
Function code
06
3
Register address (MSB)
*2
00
4
Register address (LSB)
*2
01
5
Written data (MSB)
13
6
Written data (LSB)
88
7
CRC-16 (MSB)
D5
8
CRC-16 (LSB)
5C
*1. For a broadcast, no response will be sent back.
*2. Note that the holding register start address for F001(LOW) is 0001 hex, which is 1 less than the register num-
ber 0002 hex: Register address = Register number - 1.
Note that, except for F001, changing the parameter value on the data display does not update the dis-
played data realtime. To view the updated value, once return to the parameter display and then display
the data again.
If the Write to Holding Register function is not executed normally, refer to 8-5-9 Exception Response on
page 8-20.
8-5-5 Loop-back Test [08 hex]
Checks the communications between the master and the slave. Any value can be used for test data.
⚫ Query
No.
Field name
Example
[hex]
1
Slave address
*1
01
2
Function code
08
3
Test sub code (MSB)
00
4
Test sub code (LSB)
00
5
Data (MSB)
Any
6
Data (LSB)
Any
7
CRC-16 (MSB)
CRC
8
CRC-16 (LSB)
CRC
8
8-5 Explanation of Each Function Code
8-5-5 Loop-back Test [08 hex]
Example. Perform a Loop-back Test on Inverter with Slave Address 1

Omron MX2 Series Specifications

General

Cooling Method	Fan cooling
Output Frequency Range	0.1 to 400 Hz
Control Method	V/f control, Sensorless vector control
Protection Functions	Overcurrent, overvoltage, undervoltage, overload, overheating, short circuit
Communication Options	Modbus RTU
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Ambient Operating Temperature	-10°C to +50°C
Enclosure	IP20
Storage Temperature	-20°C to +65°C
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m
Power Supply Voltage	200-240V AC
Input Voltage	3-phase 200-240V AC