Mitsubishi F700 Series Instruction Manual page 226

(3) Communication operation presence/absence and data format types
 Data communication between the computer and inverter is made in ASCII code (hexadecimal code).
 Communication operation presence/absence and data format types are as follows:
Operation
Symbol
Communication request is sent to the
1)
inverter in accordance with the user
program in the computer.
2)
Inverter data processing time
Reply data from the
3) inverter (Data 1) is
checked for error)
4)
Computer processing delay time
Answer from
computer in response
5)
to reply data 3)
(Data 3) is checked
for error)
*1 In the communication request data from the computer to the inverter, 10ms or more is also required after "no data error (ACK)". (Refer to
page 217)
*2 The inverter response to the inverter reset request can be selected. (Refer to page 222)
*3 At mode error, and data range error, C1 data contains an error code. (Refer to page 226) Except for those errors, the error is returned with data
format D.
Data writing format
Communication request data from the computer to the inverter 1)
Format
1 2 3
Inverter
ENQ
A station
*1
number
*2
Inverter
ENQ
A1
station
*1
number *2
Inverter
ENQ
A2 station
*1
number
*2
Reply data from the inverter to the computer 3) (No data error detected)
Format
1 2 3
Inverter
ACK
C
station
*1
number *2
Inverter
STX
C1 station
*1
number
*2
Reply data from the inverter to the computer 3) (With data error)
Number of Characters
Format
1 2 3
Inverter
NAK
D
station
*1
number
*2
*1 Indicate a control code
*2 Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
*3 When Pr.123 and Pr.337 (Waiting time setting)
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 also be 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 PU communication CR/LF selection.
Run
Command
A, A1
Present
No error
*1
C
(Request accepted)
With error.
D
(Request rejected)
No error
*1
Absent
(No inverter
processing)
With error
(Inverter re- Absent
outputs 3))
Number of Characters
4 5 6 7 8
Instruction
Data
*3
code
Instruction
*3 Data
code
Send Receive
Instruction
data data
*3
code
type type
Number of Characters
4 5 6 7 8
*4
Send Receive
Error Error
data data
code 1 code 2
type type
4 5
Error
*4
code

9999, create a communication request data without "waiting time" in the data format. (The
Communication operation and setting
Running Multi Parameter
Frequency command Write
A A2 A
Present Present Present
C C1 C
*3
D D D
10ms or more
Absent
Absent Absent
(C)
Absent F Absent
9 10 11 12 13
Sum
*4
check
Sum
*4
check
Data1
9 10 11 12 13
Data1 Data2
Inverter Parameter
Monitor
Reset Read
A B B
Absent Present Present
E, E1,
C E
*2
E2, E3
D D D
*2
Absent
Absent Absent (C)
(C)
Absent F F
14 15 16 17 18
Sum
Data2
check
14 15 16 17 18
ETX Sum
check
*1
215
19
*4
19
*4
4