Mitsubishi Electric FR-CC2-N Series Instruction Manual page 112

c. Reply data from the converter unit to the computer (No data error detected)
Format
1
Converter unit
*1
E
STX
station number
Converter unit
*1
E1
STX
station number
Converter unit
*1
E2
STX
station number
Format
1
Converter unit
*1
E3
STX
station number
c. Reply data from the converter unit to the computer (Data error detected)
Number of characters
Format
1
Converter unit
*1
D
NAK
station number
e. Transmission data from the computer to the converter unit when reading data
Number of characters
Format
1
Converter unit
C (No data error
*1
ACK
detected)
station number
Converter unit
F (Data error
*1
NAK
detected)
station number
*1 Indicates a control code.
*2 Specifies the converter unit station numbers in the range of H00 to H1F (stations 0 to 31) in hexadecimal.
*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 converter unit, 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, setting must be also made on the converter unit according 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
• Converter unit station number
Specify the station number of the converter unit which communicates with the computer.
• Instruction code
Specify the processing request, for example, operation or monitoring, given by the computer to the converter unit.
Therefore, the operation or monitoring an item is enabled by specifying the corresponding instruction code. (Refer to
117.)
• Data
Read/write data such as parameters transmitted from/to the converter unit. The definitions and ranges of set data are
determined in accordance with the instruction codes. (Refer to
• Time delay
2 3 4 5
Read data
*2
Read data
*2
Read data (model information / capacity)
*2
2 3
Read data (model information / converter unit
*2
model)
2 3 4 5
Error
*4
*2
code
2 3 4
*4
*2
*4
*2
ASCII code
H02
H03
H05
H06
H0A
H0D
H15
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)
page 117.)
5.7 (N) Communication operation parameters
9 10 11 12
*4
*1
Sum check
ETX
24 25 26 27
*1 *4
Sum check
ETX
5. PARAMETERS
1
13
2
*4
3
4
5
6
7
8
9
10
page
111