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PARAMETERS
112
Note: 1. The inverter station numbers may be set between H00 and H1F (stations 0 and 31) in
hexadecimal.
2. *3 indicates the control code.
3. *4 indicates the CR or LF code.
When data is transmitted from the computer to the inverter, codes CR (carriage return)
and LF (line feed) are automatically set at the end of a data group on some computers. In
this case, setting must also be made from the inverter according to the computer.
Also, the presence and absence of the CR and LF codes can be selected using Pr. 124.
4. *5: When Pr. 123 "waiting time setting"
≠
9999, create the communication request data
with no "waiting time" in the data format. (The number of characters decreases by 1.)
2) Reply data from inverter to computer during data write
*3
ACK
*4
1234
*3
NAK
123 4
*4
5
[No data error detected] [Data error detected]
Format C
Format D
Inverter
station
number
Inverter
station
number
Error
code
←
Number of
characters
←
Number of
characters
3) Reply data from inverter to computer during data read
123 4 5
1234567891011
[No data error detected]
123456789
*3
STX
Format E
Inverter
station
number
Read
data
Sum
check
←
Number of characters
Format E'
*3
ETX
*4Read data
Inverter
station
number
Sum
check
*4
*3
ETX
*3
STX
[Data error detected]
Format F
*3
NAK
Error
code
*4
Inverter
station
number
4) Send data from computer to inverter during data read
1234 123 4
[No data error detected]
*3
ACK
Format G
Inverter
station
number
←
Number of characters
Format H
*4
*3
NAK
[Data error detected]
*4
Inverter
station
number
←
Number of characters
(
4
)
Data definitions
1) Control codes
Signal ASCII Code Description
STX H02 Start of Text (Start of data)
ETX H03 End of Text (End of data)
ENQ H05 Enquiry (Communication request)
ACK H06 Acknowledge (No data error detected)
LF H0A Line Feed
CR H0D Carriage Return
NAK H15 Negative Acknowledge (Data error detected)
2) Inverter station number
Specify the station number of the inverter which communicates with the computer.
3) Instruction code
Specify the processing request (e.g. operation, monitoring) given by the computer to the inverter. Hence,
the inverter can be run and monitored in various ways by specifying the instruction code as appropriate.
(Refer to page 195)
4) Data
Indicates the data such as frequency and parameters transferred to and from the inverter. The definitions
and ranges of set data are determined in accordance with the instruction codes. (Refer to page 195)