Mitsubishi Electric FR-F500 Instruction Manual page 128

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
↓
Computer
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.
(Example1)
Computer→Inverter
ASCII code→
*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.)
(Example2)
Inverter→Computer
ASCII code→
Station
Instruction
ENQ
number
code
0 1 E 1
H05 H30 H31 H45 H31
↓
H H H H H
30 + 31 + 45 + 31 + 31 + 30 + 37 + 41 + 44
H
=1F4
Sum
Station
STX Read data
number
0 1 1 7
H02 H30 H31 H31 H37
↓
H H H H H
30 + 31 + 31 + 37 + 37 + 30
H
=130
Sum
108
Inverter data processing time
= waiting time
(set value×10ms)
Sum check
Data
1 0 7 A D F
H31 H30 H37 H41 H44 H46 H34
H H H H
Sum check
ETX
code
←Binary code
7 0 3 0
H37 H30 H03 H33 H30
H
PARAMETERS
+ data check time
(12ms)
code
4 ←Binary code
4