Mitsubishi FR-E520-0.1KN - Page 134

PARAMETERS
119
5) Waiting time
Specify the waiting time between the receipt of data at the inverter from the
computer and the transmission of reply data. Set the waiting time in accordance
with the response time of the computer between 0 and 150ms in 10ms
increments
(e.g. 1 = 10ms, 2 = 20ms).
Computer
↓
Inverter
Inverter
↓
Com
p
uter
Inverter data processing time
= waitin
g
time + data check time
(setting
×
10ms) (12ms)
Note: If the Pr. 123 "waiting time setting" value is not 9999, create the communication
request data with no "waiting time" in the data format. (The number of
characters is decremented by 1.)
6) Sum check code
The sum check code is 2-digit ASCII (hexadecimal) representing the lower 1 byte
(8 bits) of the sum (binary) derived from the checked ASCII data.
= 1F4
(Example 1)
Computer
→
Inverter
E
N
Q
Waiting
time
1
Instruction
code
Station
number
0
1
Data Sum
check
code
E1 07ADF4
05
H
30
H
31
H
31
H
45
H
31
H
30
H
37
H
41
H
44
H
46
H
34
H
ASCII code
→
←
Binar
y
cod
e
Sum
(Example 2)
Inverter
→
Computer
S
T
X
Read time
0 117 0 30
02
H
30
H
31
H
37
H
31
H
37
H
30
H
03
H
33
H
30
H
E
T
X
7
ASCII code
→
Station
number
Sum
check
code
←
Binary code
↓
H
30 + 31 + 45 + 31 + 31 + 30 + 37 + 41 + 44
HHHHHHH H
H
Sum
↓
H
30 + 31 + 31 + 37 + 37 + 30
= 130
HHHHH
H
7) Error code
If any error is found in the data received by the inverter, its definition is sent back
to the computer together with the NAK code. (Refer to page 123.)
4