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PARAMETERS
116
7) 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.
1
0
1
E
1
0
7
A
D
F
4
H05
H30
H31
H31
H45
H31
H30
H37
H41
H44
H46
H34
(Example1)
Computer
→
Inverter
ASCII code
→
Station
number
Instruction
code
*W
ai
ti
ng
ti
m
e
Data
Sum check
code
←
Binary code
Sum
↓
30 + 31 + 45 + 31 + 31 + 30 + 37 + 41 + 44
=1F4
H
H
H
H
H
H
H
H
H
H
0
1
1
7
0
3
0
H02
H30
H31
H37
H31
H37
H30
H03
H33
H30
7
(Example2)
Inverter
→
Computer
ASCII code
→
←
Binary code
Sum check
code
STX
Station
number
Read data
ETX
Sum
↓
30 + 31 + 31 + 37 + 37 + 30
=130
H
H
H
H
H
H
H
ENQ
*When Pr. 123 "waiting time setting"
≠
9999, create the communication request data with no "waiting time" in the data format.
(The number of characters is decreased by 1.)
8) 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 120)
Содержание FR-F500 Series
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