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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 173

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a. Communication request data from the computer to the inverter
Format
B
ENQ
c. Reply data from the inverter to the computer (No data error detected)
Format
E
STX
E1
STX
E2
STX
Format
E3
STX
c. Reply data from the inverter to the computer (Data error detected)
Format
D
NAK
e. Transmission data from the computer to the inverter when reading data
Format
C
(No data error
ACK
detected)
F
(Data error
NAK
detected)
*1
Indicates a control code.
*2
Specifies the inverter station numbers in the range of H00 to H1F (stations 0 to 31) in hexadecimal.
*3
Set the delay time. When Pr.123 (time delay setting) ≠ 9999, create a communication request data without time delay in the data format. (The
number of characters decreases by 1.)
*4
CR/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 be also made on the inverter according to the computer. Whether the CR
and LF codes will be present or absent can be selected using Pr.124 or Pr.341 (CR/LF selection).
 Data definitions
• Control code
Signal name
STX
ETX
ENQ
ACK
LF
CR
NAK
• Inverter station number
Specify the station number of the inverter which communicates with the computer.
• Instruction code
Specify the processing request, for example, operation or monitoring, given by the computer to the inverter. Hence, the
inverter can be run and monitored in various ways by specifying the instruction code appropriately. (Refer to
172
5. PARAMETERS
5.11 (N) Communication operation parameters
Number of characters
1
2
3
4
Inverter station
*1
Instruction code
*2
number
1
2
3
4
Inverter station
*1
Read data
*2
number
Inverter station
*1
Read data
*2
number
Inverter station
*1
Read data
*2
number
1
2
3
Inverter station
*1
Read data (Inverter model information)
*2
number
Number of characters
1
2
3
4
Inverter station
Error
*1
*2
code
number
Number of characters
1
2
3
Inverter station
*1
*4
*2
number
Inverter station
*1
*4
*2
number
ASCII code
H02
H03
H05
H06
H0A
H0D
H15
5
6
7
*3
Sum check
Number of characters
5
6
7
*1
Sum check
ETX
Number of characters
4 to 23
5
*4
4
Start Of Text (Start of data)
End Of Text (End of data)
Enquiry (Communication request)
Acknowledge (No data error detected)
Line Feed
Carriage Return
Negative Acknowledge (Data error detected)
8
9
*4
8
9
10
11
*1
*4
Sum check
ETX
*4
*1
Sum check
ETX
24
25
*1
Sum check
ETX
Description
12
13
*4
26
27
*4
page
179.)

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