Mitsubishi Electric FR-V560 Instruction Manual page 152

<Computer programming>
(1) Communication procedure
Data communication between the computer and inverter is made in the following procedure.
Computer
Inverter
Inverter
Computer
*1 If a retry must be made at occurrence of a data error, execute retry operation with the user program. The
inverter comes to an alarm stop if the number of consecutive retries exceeds the parameter setting.
*2 On receipt of a data error occurrence, the inverter returns retry data 3 to the computer again. The inverter
comes to an alarm stop if the number of consecutive data errors reaches or exceeds the parameter setting.
(2) Communication operation presence/absence and data format types
Communication operation presence/absence and data format types are as follows.
No. Operation
Communication request is sent to the
1) inverter in accordance with the user program
of the computer.
2) Inverter data processing time
Reply data from the
inverter
3)
(Data 1 is checked for
error)
4) Computer processing delay time
Answer from computer
in response to reply
5) data 3
(Data 3 is checked for
error)
* 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 145.)
(3) Data format
Data are used in hexadecimal.
Data are automatically converted into ASCII for communication between the computer and inverter.
Data format types
1) Communication request data from the computer to the inverter
[Data write]
*1
Format A
ENQ
1
*1
Format A'
ENQ
1
*1
Format A''
ENQ
1
[Data read]
*1
Format B
ENQ
1
When data are read
(Data flow)
1)
*1
(Data flow)
When data are written
Run
Command
A'
Present
No error*
(Request C
accepted)
With error
D
(Request rejected)
Absent
No error*
Inverter performs Absent
no processing
With error
Inverter re-outputs Absent
3
*2
*3
Instruction
Inverter
Waiting Data
station
code
time
number
2 3 4 5 6 7 8
*2
*3
Instruction
Inverter
Waiting Data
station
code
time
number
2 3 4 5 6 7 8
*2
*3
Instruction
Inverter
Waiting
station code
time
number
2 3 4 5 6 7 8
*2
*3
Instruction Sum
Inverter
Waiting
station
code check
time
number
2 3 4 5 6 7 8
143
Communication functions (Pr. 117 to Pr. 124)
*2
4) 5)
2) 3)
Running Parameter Inverter
Speed Write Reset
A
A
A"
Present Present Absent
C C Absent
D D Absent
Absent Absent Absent
Absent Absent Absent
Absent Absent Absent
Sum
*4
check
9 10 11 12 13 Number of characters
Sum
*4
check
9 10 11 Number of characters
Sum
Data
*4
check
9 10 11 12 13 14 15
*4
9 Number of characters
Time
Parameter
Monitoring
Read
A B B
Present Present
E
E' E
E"
F F
Absent Absent
G G
H H
Number of characters
4