Mitsubishi Electric FR-F820-00046 Instruction Manual page 488

• Data reading format
a. Communication request data from the computer to the inverter
Format
1
Inverter station
*1
B
ENQ
number
c. Reply data from the inverter to the computer (No data error detected)
Format
1
Inverter station
*1
E
STX
number
Inverter station
*1
E1
STX
number
Inverter station
*1
E2
STX
number
Format
1
Inverter station
*1
E3
STX
number
c. Reply data from the inverter to the computer (Data error detected)
Number of characters
Format
1
Inverter station
*1
D
NAK
number
e. Transmission data from the computer to the inverter when reading data
Number of characters
Format
1
C
Inverter station
*1
(No data error
ACK
number
detected)
F
Inverter station
*1
(Data error
NAK
number
detected)
*1 A control code.
*2 The inverter station number is specified in hexadecimal in the range of H00 to H1F (stations No. 0 to 31).
*3 Set the delay time. When Pr.123 PU communication waiting time setting or Pr.337 RS-485 communication waiting time setting is set to
other than "9999", create the communication request data without "delay time" in the data format. (The number of characters decreases by 1.)
*4 CR+LF code: When a computer transmits data to the inverter, some computers automatically provide either one or both of the codes CR (carriage
return) and LF (line feed) at the end of a data group. In this case, the same setting is required for data sent from the inverter to the computer. Use
Pr.124 or Pr.341 for the CR+LF code setting.
 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.
Number of characters
2 3 4 5
Instruction code
*2
2 3 4 5
Read data
*2
Read data
*2
Read data
*2
2 3
Read data (Inverter model information)
*2
2 3 4 5
Error
*4
*2
code
2 3 4
*4
*2
*4
*2
ASCII code
H02
H03
H05
H06
H0A
H0D
H15
6 7 8
*3 *4
Sum check
Number of characters
6 7 8
*1
Sum check
ETX
*1 *4
Sum check
ETX
Number of characters
4 to 23
Description
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)
5.12 (N) Communication operation parameters
9
9 10 11 12
*4
*1
Sum check
ETX
24 25 26 27
*1 *4
Sum check
ETX
5. PARAMETERS
1
2
3
13
4
5
*4
6
7
8
9
10
487