Omron Varispeed E7 User Manual

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Loopback Test
The loopback test returns command messages directly as response messages without changing the contents to
check the communications between the master and slave. A user-defined test code and data values can be set.
The following table shows a message example when performing a loopback test with the slave no. 1.
Writing to Multiple Inverter Memory Registers
The writing of inverter memory registers works similar to the reading process, i.e. the address of the first reg-
ister that is to be written and the quantity of to be written registers must be set in the command message.
The to be written data must be consecutive, starting from the specified address in the command message. The
data order must be higher 8 bits, then lower 8 bits. The data must be in memory register address order.
The following table shows an example of a message where a forward operation has been set with a frequency
reference of 60.0 Hz for the inverter with the slave address 01H.
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave address 01H Slave address 01H Slave address 01H
Function code 08H Function code 08H Function code 89H
Test Code
Higher 00H
Test Code
Higher 00H Error Code 01H
Lower 00H Lower 00H
CRC-16
Higher 86H
Data
Higher A5H
Data
Higher A5H Lower 50H
Lower 37H Lower 37H
CRC-16
Higher DAH
CRC-16
Higher DAH
Lower 8DH Lower 8DH
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave Address 01H Slave Address 01H Slave Address 01H
Function Code 10H Function Code 10H Function Code 90H
Start
Address
Higher 00H
Start
Address
Higher 00H Error code 02H
Lower 01H Lower 01H
CRC-16
Higher CDH
Quantity
Higher 00H
Quantity
Higher 00H Lower C1H
Lower 02H Lower 02H
No. of data 04H
CRC-16
Higher 10H
Lead data
Higher 00H Lower 08H
Lower 01H
Next data
Higher 02H
Lower 58H * No. of data = 2 x (quantity)
CRC-16
Higher 63H
Lower 39H
IMPORTANT
For the number of data value in the command message the double value of the data quantity must be
used.

Omron Varispeed E7 Specifications

General

Brand	Omron
Model	Varispeed E7
Category	Inverter
Language	English