Mitsubishi Electric FR-E500 Instruction Manual page 137

*1. If a data error is detected and a retry must be made, 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 "reply 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 inverter in
1)
accordance with the user
program in the computer.
2) Inverter data processing time Present Present
Reply data
from the
inverter
3)
(Data 1) is
checked for
error.
Computer processing delay
4)
time
Answer from
computer in
response to reply
5)
data 3. (Data 3 is
checked for
error)
Note: Data format is A" or E" when you set any of "0.01 to 9998" in Pr. 37 "output
frequency setting" and "1" in data code "HFF".
( 3 ) Data format
Data used is hexadecimal.
Data is automatically transferred in ASCII between the computer and inverter.
1) Data format types
(1) Communication request data from computer to inverter
[Data write]
*
3
Format A
ENQ
1
*
3
Format A'
ENQ
1
*
3
Format A"
ENQ
1
[Data read]
*
3
Format B
ENQ
1
Run
Com m and
No error
Request
accepted
With error
request
rejected
Absent
No error
No
Absent
processing
With error 3 Absent
Inverter
Instruction
station
code
number
2 3 4 5 6 7
Inverter
Instruction
station
code
number
2 3 4 5 6 7
Inverter
Instruction
station
code
number
2 3 4 5 6 7
Inverter
Instruction
station
code
number
2 3 4 5 6 7
Running Parameter
Write
Frequency
A
A'
(A")Note (A")Note
Present
C C
D D
Absent Absent
Absent Absent
Absent Absent
Sum
Data
check
8 9 10 11 12 13
Sum
*
4
Data
check
←Number of characters
8 9 10 11
Data
8 9 10 11 12 13 14 15
Sum
*
4
check
←Number of characters
8 9
122
PARAMETERS
Inverter Monitor-
Reset ing
A
A
Absent Present Present
E, E'
C Absent
"
(E )Note
D Absent
Absent Absent Absent
Absent
Absent
*
4
←Number of characters
Sum
*
4
check
←Number of characters
Parame-
ter Read
B B
E
F F
G G
H H