INVT Goodrive390L Series User Manual page 80

Goodrive390L Series Lift-Dedicated VFD
represented in the hexadecimal form. In such cases, multiply 50.12 by 100 to obtain an
integer 5012, and then 50.12 can be represented as 1394H in the hexadecimal form (5012
in the decimal form).
In the process of multiplying a non-integer by a multiple to obtain an integer, the
multiple is referred to as a fieldbus scale.
The fieldbus scale depends on the number of decimal places in the value specified in
"Setting range" or "Default". If there are n decimal places in the value, the fieldbus scale
m is the nth-power of 10. Take the following table as an example, m is the value of 10 to
the power of n.
7.1.2.7 Error message response
Operation errors may occur in communication-based control. For example, some
parameters can only be read, but a write command is sent. In this case, the VFD returns
an error message response.
Error message responses are sent from the VFD to the master. The following table lists
the codes and definitions of the error message responses.
Code Name
01H Invalid command
Invalid data
02H
Address
03H Invalid data value
04H Operation failure
Incorrect password
05H
Data frame error
06H
202403 (V1.0）
The command code received by the upper computer is not
allowed to be executed. The possible causes are as follows:
The function code is applicable only on new devices and is not
implemented on this device.
The slave is in the faulty state when processing this request.
For the VFD, the data address in the request of the host
controller is not allowed. In particular, the combination of the
register address and the number of the to-be-sent bytes is
invalid.
The received data domain contains a value that is not allowed.
The value indicates the error of the remaining structure in the
combined request.
Note: It does not mean that the data item submitted for
storage in the register includes a value unexpected by the
program.
The parameter setting is invalid in the write operation. For
example, a function input terminal cannot be set repeatedly.
The password entered in the password verification address is
different from that set in P07.00.
The data frame sent from the host controller is incorrect in the
length, or in the RTU format, the value of the CRC check bit is
Communication protocol
Definition
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